fduthesis (9apr18)

git-svn-id: svn://tug.org/texlive/trunk@47408 c570f23f-e606-0410-a88d-b1316a301751

4 files changed, 11079 insertions, 0 deletions

diff --git a/Master/texmf-dist/source/latex/fduthesis/fduthesis-doc.dtx b/Master/texmf-dist/source/latex/fduthesis/fduthesis-doc.dtx
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+% \iffalse meta-comment
+%
+% Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either
+% version 1.3c of this license or (at your option) any later
+% version. The latest version of this license is in:
+%
+%   http://www.latex-project.org/lppl.txt
+%
+% and version 1.3 or later is part of all distributions of
+% LaTeX version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is Xiangdong Zeng.
+%
+% \fi
+%
+% \EnableImplementation
+%
+% \begin{implementation}
+%
+%^^A 代码部分的页边距
+% \newgeometry{
+%   left      = 2.25 in,
+%   right     = 1.00 in,
+%   top       = 1.25 in,
+%   bottom    = 1.00 in,
+%   marginpar = 2.25 in
+% }
+%
+% \subsection{模板文档样式 \cls{fdudoc}}
+%
+% \changes{v0.4}{2017/07/29}{在 \cls{ctxdoc} 的基础上完成
+%   \cls{fdudoc} 文档类，用于模板手册的编写。}
+%
+% 编写 \LaTeX{} 宏包文档，传统上会采用 \pkg{doc} 宏包或
+% \cls{ltxdoc} 文档类。而对于使用 \LaTeX3 开发的宏包，\cls{l3doc}
+% 文档类将是一个更好的选择。\CTeX{} 宏集所附带的
+% \href{https://github.com/CTeX-org/ctex-kit/blob/master/tool/ctxdoc.cls}^^A
+% {\cls{ctxdoc}} 文档类，则在 \cls{l3doc} 的基础上进行了一些修正，
+% 特别是重新实现了 \env{macrocode} 环境，使之能更好地应用于中文
+% 文档。\cls{ctxdoc} 的主要功能如下：
+%
+% \begin{itemize}
+%   \item 注释使用灰色、倾斜字体，以便与一般代码区分；
+%   \item 模块、名字空间等使用彩色标注，并添加超链接；
+%   \item 自动更新行号宽度；
+%   \item 边注中的长命令使用盒子进行缩放，防止溢出；
+%   \item 修订记录中将显示修改日期；
+%   \item 添加中文支持。
+% \end{itemize}
+%
+% 然而，\cls{ctxdoc} 主要供内部使用，代码较为混乱和随意。
+% 本模板的文档样式（\cls{fdudoc}）为适应具体需求，对其代码
+% 进行了整理，添加了相关注释，并做了一些改动：
+%
+% \begin{itemize}
+%   \item 允许模块标记 |<*|\meta{module}|>| 和
+%     |</|\meta{module}|>| 出现在行号左侧；
+%   \item 不再以直立、倾斜字体区分不同嵌套层次的模块；
+%   \item 调整索引中版本号的排序方式；
+%   \item 新增一系列实用命令；
+%   \item 修改文档字体、配色等。
+% \end{itemize}
+%
+% 本文档样式的核心代码主要来自 \cls{ctxdoc} 文档类 v2.4.10。
+% 在此，本人要向原开发者
+% \href{https://github.com/CTeX-org/}{CTEX.ORG}
+% 团队表示由衷的感谢。
+%
+% 以下为 \cls{fdudoc} 的具体实现。
+%
+% \subsubsection{载入宏包、文档类}
+%
+%    \begin{macrocode}
+%<*doc>
+\ExplSyntaxOff
+%    \end{macrocode}
+%
+% 无需载入 \pkg{thumbpdf}。
+%    \begin{macrocode}
+\@namedef{ver@thumbpdf.sty}{9999/99/99}
+%    \end{macrocode}
+%
+% 关闭 \pkg{xparse} 中的命令声明信息。
+%    \begin{macrocode}
+\PassOptionsToPackage{log-declarations = false}{xparse}
+%    \end{macrocode}
+%
+% 载入宏包和文档类。
+%    \begin{macrocode}
+\LoadClass[a4paper, full]{l3doc}
+\RequirePackage[UTF8, heading, sub3section, fontset = none]{ctex}
+%    \end{macrocode}
+% 与 \pkg{hypdoc}（由 \cls{l3doc} 调用）冲突，导致脚注超链接
+% 无法正常跳转。临时禁用。
+%    \begin{macrocode}
+% \RequirePackage[stable, bottom]{footmisc}
+\RequirePackage{graphicx}
+\RequirePackage{caption}
+\RequirePackage{geometry}
+\RequirePackage{listings}
+\RequirePackage{makecell}
+\RequirePackage[toc]{multitoc}
+\RequirePackage{siunitx}
+\RequirePackage{tabularx}
+\RequirePackage{threeparttable}
+\RequirePackage{unicode-math}
+\RequirePackage{xcolor}
+\RequirePackage{xcolor-material}
+\RequirePackage{zref-base}
+%    \end{macrocode}
+%
+% \subsubsection{\env{macrocode} 环境}
+%
+% \paragraph{继承的代码}
+%
+% \begin{macro}[int]{\macro@code}
+% 在 \pkg{doc} 宏包中，\env{macrocode} 环境的核心功能由命令
+% \tn{macro@code} 负责实现，而 \tn{xmacro@code} 只用来结束
+% \env{macrocode} 环境。但在 \cls{l3doc} 以及 \cls{ctxdoc} 中，
+% \tn{xmacro\-@\-code} 则基本接管了 \tn{macro@code} 的功能。
+% 后者此时只起辅助作用。
+%    \begin{macrocode}
+\def\macro@code{%
+%    \end{macrocode}
+% 调整前后间距，禁止 \env{macrocode} 环境前的分页。
+%    \begin{macrocode}
+   \topsep \MacrocodeTopsep
+   \@beginparpenalty \predisplaypenalty
+%    \end{macrocode}
+% 将列表前后的附加垂直空白设为 0。根据 \cls{ctxdoc} 修改。
+%    \begin{macrocode}
+   \partopsep \z@skip
+%    \if@inlabel\leavevmode\fi
+%    \end{macrocode}
+% 构建 \env{trivlist} 环境，设置段间距为 0。
+% 之后修改字体，并调节左右间距。\tn{MacroIndent} 会根据代码行数
+% 更新，具体细节见后文。
+% \tn{macro@font} 用来在不同模块见切换字体。本文档类不使用
+% \tn{AltMacroFont}，因此这里改用 \tn{MacroFont} 代替。
+%    \begin{macrocode}
+   \trivlist \parskip \z@ \item[]%
+%    \macro@font
+   \MacroFont
+   \leftskip\@totalleftmargin \advance\leftskip\MacroIndent
+   \rightskip\z@ \parindent\z@ \parfillskip\@flushglue
+%    \end{macrocode}
+% 按照 \LaTeXe{} 中 \tn{verbatim} 环境中定义 \tn{par}，使得空行
+% 可以原样输出，否则空行会被吃掉。
+%    \begin{macrocode}
+   \blank@linefalse \def\par{\ifblank@line
+                             \leavevmode\fi
+                             \blank@linetrue\@@par
+                             \penalty\interlinepenalty}
+%    \end{macrocode}
+% \tn{obeylines} 将把回车符 |^^M| 变成 \tn{par}。
+% 接下来将所有特殊符号的类别码设为 12，即“其他”类。
+%    \begin{macrocode}
+   \obeylines
+   \let\do\do@noligs \verbatim@nolig@list
+   \let\do\@makeother \dospecials
+%    \end{macrocode}
+% 相当于退出 |\begin{list}| 和 |\begin{minipage}|。
+%    \begin{macrocode}
+   \global\@newlistfalse
+   \global\@minipagefalse
+%    \end{macrocode}
+% 初始化交叉引用功能。
+%    \begin{macrocode}
+   \init@crossref}
+%    \end{macrocode}
+% \end{macro}
+%
+%    \begin{macrocode}
+%<@@=fdudoc>
+\ExplSyntaxOn
+%    \end{macrocode}
+%
+% \begin{variable}{\l_@@_tmpa_tl,\l_@@_tmpb_tl}
+% 临时变量。
+%    \begin{macrocode}
+\tl_new:N \l_@@_tmpa_tl
+\tl_new:N \l_@@_tmpb_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_patch_cmd:Nnn,\@@_preto_cmd:Nn,\@@_appto_cmd:Nn}
+% 补丁工具。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_patch_cmd:Nnn #1#2#3
+  {
+    \ctex_patch_cmd_once:NnnnTF #1 { } {#2} {#3}
+      { } { \ctex_patch_failure:N #1 }
+  }
+\cs_new_protected:Npn \@@_preto_cmd:Nn #1#2
+  {
+    \ctex_preto_cmd:NnnTF #1 { } {#2}
+      { } { \ctex_patch_failure:N #1 }
+  }
+\cs_new_protected:Npn \@@_appto_cmd:Nn #1#2
+  {
+    \ctex_appto_cmd:NnnTF #1 { } {#2}
+      { } { \ctex_patch_failure:N #1 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \paragraph{代码行处理}
+%
+% \begin{macro}[int]{\xmacro@code,\sxmacro@code}
+% 重新实现 \env{macrocode} 与 \env{macrocode*} 环境的核心功能，
+% 将对代码逐行处理。后者会将空格显示为“\textvisiblespace”。
+%    \begin{macrocode}
+\cs_set_protected_nopar:Npn \xmacro@code
+  { \@@_marco_code:w }
+\cs_set_protected_nopar:Npn \sxmacro@code
+  {
+    \fontspec_print_visible_spaces:
+    \xmacro@code
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_marco_code:w}
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_marco_code:w
+  {
+%    \end{macrocode}
+% 根据 \tn{codeline@index} 是否为 |true| 选择是否显示行号。
+%    \begin{macrocode}
+    \ifcodeline@index
+      \@@_marco_code_every_par:n { \@@_code_line_no: }
+    \else:
+      \@@_marco_code_every_par:n { }
+    \fi:
+%    \end{macrocode}
+% 设置代码段结束标记为“\verb*|%    \end{macrocode}^^M|”。
+%    \begin{macrocode}
+    \@@_make_finish_tag:x { \@currenvir }
+%    \end{macrocode}
+% 开始 \env{macrocode}。
+%    \begin{macrocode}
+    \@@_macro_code_start:w
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_marco_code_every_par:n}
+% 在每段之前插入内容。这里每段即相当于每行。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_marco_code_every_par:n #1
+  {
+    \everypar
+      {
+        \everypar {#1}
+        \if@inlabel
+          \global \@inlabelfalse \@noparlistfalse
+          \llap { \box \@labels \hskip \leftskip }
+        \fi
+        #1
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 设置 \tn{endlinechar} 为 $-1$，表示行末不插入任何字符
+% （实际上相当于在行尾插入注释符 |%|）。
+%    \begin{macrocode}
+\group_begin:
+  \int_set:Nn \tex_endlinechar:D { -1 }
+%    \end{macrocode}
+%
+% \begin{variable}{\c_@@_active_space_tl}
+% 活动字符类的空格（ASCII 码为 32）。
+%    \begin{macrocode}
+  \use:n
+    {
+      \char_set_catcode_active:n { 32 }
+      \tl_const:Nn \c_@@_active_space_tl
+    }
+    { }
+\group_end:
+%    \end{macrocode}
+% \end{variable}
+%
+% ASCII 码 13 是回车符 |^^M|。将其设置为活动字符。
+%    \begin{macrocode}
+\group_begin:
+  \char_set_catcode_active:n { 13 }
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_make_finish_tag:n,\@@_make_finish_tag:x}
+% \env{macrocode} 结尾标记。展开后变成
+% “\verb*|%    \end{#1}^^M|”。
+%    \begin{macrocode}
+  \cs_new_protected:Npx \@@_make_finish_tag:n #1
+    {
+      \tl_set:Nn \exp_not:N \l_@@_macro_code_finish_tl
+        {
+          \c_percent_str
+          \prg_replicate:nn { 4 }
+            { \exp_not:o { \c_@@_active_space_tl } }
+          \exp_not:o { \active@escape@char } end
+          \c_left_brace_str #1 \c_right_brace_str
+          \exp_not:N ^^M
+        }
+    }
+  \cs_generate_variant:Nn \@@_make_finish_tag:n { x }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_macro_code_start:w}
+% 开始代码环境。此命令主要是为了防止 |\begin{macrocode}|
+% 后出现多余的空行。
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_macro_code_start:w #1
+    {
+      \str_if_eq:nnTF {#1} { ^^M }
+        { \@@_macro_code_read_line:w }
+        { \@@_macro_code_read_line:w #1 }
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_macro_code_read_line:w}
+% 逐行读取代码，并连同行尾回车符一并存入
+% \cs{l_@@_macro_code_line_tl}。如果该行与结束标记
+% “\verb*|%    \end{macrocode}^^M|”相同，则结束此
+% \env{macrocode}；否则继续处理该行代码。
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_macro_code_read_line:w #1 ^^M
+    {
+      \tl_set:Nn \l_@@_macro_code_line_tl { #1 ^^M }
+      \tl_if_eq:NNTF
+        \l_@@_macro_code_line_tl \l_@@_macro_code_finish_tl
+        { \exp_args:Nx \end { \@currenvir } }
+        {
+          \@@_macro_code_process_line:
+          \@@_macro_code_read_line:w
+        }
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.4}{2017/08/09}{[\pkg{fdudoc}] 修复 \cls{ctxdoc}
+%   文档类 v2.4.10 之前版本中行距偏小的问题，见 ctex-kit
+%   \href{https://github.com/CTeX-org/ctex-kit/issues/303}{\#~303}。}
+%
+% \begin{macro}{\@@_swap_cr:,\@@_swap_cr_aux:w}
+% 把 \cs{l_@@_macro_code_line_tl} 中的回车符 |^^M| 挪到外面。
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_swap_cr:
+    {
+      \exp_after:wN
+        \@@_swap_cr_aux:w \l_@@_macro_code_line_tl
+    }
+  \cs_new_protected:Npn \@@_swap_cr_aux:w #1 ^^M
+    {
+      \group_insert_after:N ^^M
+      \tl_set:Nn \l_@@_macro_code_line_tl {#1}
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\c_@@_active_cr_tl}
+% 活动字符类的回车符。
+%    \begin{macrocode}
+  \tl_const:Nn \c_@@_active_cr_tl { ^^M }
+\group_end:
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_macro_code_line_tl,
+%   \l_@@_macro_code_finish_tl,
+%   \g_@@_macro_code_verbatim_stop_tl}
+% 分别用来存储代码行、\env{macrocode} 结束标记以及抄录停止标记。
+%    \begin{macrocode}
+\tl_new:N \l_@@_macro_code_line_tl
+\tl_new:N \l_@@_macro_code_finish_tl
+\tl_new:N \g_@@_macro_code_verbatim_stop_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_process_normal_line:}
+% 普通代码行根据开头字符分别处理。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_process_normal_line:
+  {
+    \str_case_x:nnF
+      { \str_head:N \l_@@_macro_code_line_tl }
+      {
+%    \end{macrocode}
+% 以 |%| 开头的行先由 \cs{tl_tail:N} 去掉 |%|，之后再检查 |<|。
+%    \begin{macrocode}
+        { \c_percent_str }
+        {
+          \@@_check_angle:x
+            { \tl_tail:N \l_@@_macro_code_line_tl }
+        }
+%    \end{macrocode}
+% 以 |#| 开头的行按注释的格式输出。
+%    \begin{macrocode}
+        { \c_hash_str }
+        { \@@_output_comment_line: }
+      }
+%    \end{macrocode}
+% 其余正常输出。
+%    \begin{macrocode}
+      { \@@_output_line: }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_process_verbatim_line:}
+% 处理抄录代码行（不检查 |%| 与 |<|）。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_process_verbatim_line:
+  {
+%    \end{macrocode}
+% 将该行与抄录停止标记进行比较。
+%    \begin{macrocode}
+    \tl_if_eq:NNTF \l_@@_macro_code_line_tl
+        \g_@@_macro_code_verbatim_stop_tl
+%    \end{macrocode}
+% 若相同，则结束抄录环境，清空抄录停止标记，并输出该标记；
+%    \begin{macrocode}
+      {
+        \tl_gclear:N \g_@@_macro_code_verbatim_stop_tl
+        \cs_gset_eq:NN \@@_macro_code_process_line:
+          \@@_process_normal_line:
+        \@@_output_module:nn
+          { \color { verb@guard } }
+          {
+            \@@_swap_cr:
+            \@@_module_pop:n { \l_@@_macro_code_line_tl }
+          }
+      }
+%    \end{macrocode}
+% 否则直接输出抄录代码。
+%    \begin{macrocode}
+      { \tl_use:N \l_@@_macro_code_line_tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_macro_code_process_line:}
+% 处理代码行。该命令的作用如下：
+% \begin{itemize}
+%   \item 正常情况下，等同于 \cs{@@_process_normal_line:}；
+%   \item 在 \cs{DontCheckModules} 之后，等价于
+%     \cs{@@_output_line:}，即不检查模块标记，直接输出；
+%   \item 在抄录环境中，等价于 \cs{@@_process_verbatim_line:}，
+%     此时将不再特殊处理以 |%| 开头的代码行。
+% \end{itemize}
+%    \begin{macrocode}
+\cs_new_eq:NN \@@_macro_code_process_line:
+  \@@_process_normal_line:
+%    \end{macrocode}
+% \end{macro}
+%
+% \paragraph{模块标记处理}
+%
+% \begin{macro}{\CheckModules,\DontCheckModules}
+% 选择是否检查模块标记。这两个命令在 \pkg{doc} 宏包中已有定义，
+% 此处重新声明。
+%    \begin{macrocode}
+\DeclareDocumentCommand \CheckModules { }
+  {
+    \cs_set_eq:NN \@@_macro_code_process_line:
+      \@@_process_normal_line:
+  }
+\DeclareDocumentCommand \DontCheckModules { }
+  {
+    \cs_set_eq:NN \@@_macro_code_process_line:
+      \@@_output_line:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_check_angle:n,\@@_check_angle:x}
+% 检查第一个字符是否是 |<|。若是，则检查模块；否则立刻输出改行。
+% 该函数的参数不带 |%|。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_check_angle:n #1
+  {
+    \str_if_eq_x:nnTF { \str_head:n {#1} } { < }
+      { \@@_check_module:x { \tl_tail:n {#1} } }
+      { \@@_output_comment_line: }
+  }
+\cs_generate_variant:Nn \@@_check_angle:n { x }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_check_module:n,\@@_check_module:x}
+% 检查紧跟 |<| 之后的字符。共有四种情况：
+% \begin{itemize}
+%   \item |*|：模块开始（|%<*|\meta{module}|>|）；
+%   \item |/|：模块结束（|%</|\meta{module}|>|）；
+%   \item |@|：名字空间（|%<@@=|\meta{namespace}|>|）；
+%   \item |<|：抄录环境开始（|%<<|\meta{end-tag}）。
+% \end{itemize}
+% 若不是这几种情况，则为单独一行的独立模块
+% （|%<|\meta{module}|>|）。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_check_module:n #1
+  {
+    \str_case_x:nnF { \str_head:n {#1} }
+      {
+        { * } { \@@_module_star:w }
+        { / } { \@@_module_slash:w }
+        { @ } { \@@_module_at:w }
+        { < } { \@@_module_verb:w }
+      }
+      { \@@_module_pm:w }
+%    \end{macrocode}
+% 参数 |#1| 将被上面几个 |:w| 型函数吃掉。
+%    \begin{macrocode}
+    #1 \q_stop
+  }
+\cs_generate_variant:Nn \@@_check_module:n { x }
+%    \end{macrocode}
+% \end{macro}
+%
+% 设置 |>| 为活动字符。
+%    \begin{macrocode}
+\group_begin:
+  \char_set_catcode_active:N \>
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_module_star:w}
+% 模块开始标记。
+% \begin{arguments}
+%   \item |*|\meta{module}
+%   \item 之后的代码
+% \end{arguments}
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_module_star:w #1 > #2 \q_stop
+    {
+%    \end{macrocode}
+% 临时变量 \cs{l_@@_tmp_tl} 保存 |<*|\meta{module}|>|
+% 之后的部分，即真实代码。
+%    \begin{macrocode}
+      \tl_set:Nn \l_@@_tmpa_tl {#2}
+%    \end{macrocode}
+% 判断该行是否为空（只含一个回车符 |^^M|）。
+%    \begin{macrocode}
+      \tl_if_eq:NNTF \l_@@_tmpa_tl \c_@@_active_cr_tl
+%    \end{macrocode}
+% 若是，则将 |<|\meta{module}|>| 放在行号的右侧；
+%    \begin{macrocode}
+        {
+          \@@_output_module:nn
+            { \@@_star_color: }
+            {
+              \@@_module_push:n
+                { \@@_module_angle:n {#1} }
+            }
+        }
+%    \end{macrocode}
+% 否则放在左侧，并输出相应代码。
+%    \begin{macrocode}
+        {
+          \@@_output_module_left:nn
+            { \@@_star_color: }
+            {
+              \@@_module_push:n
+                { \@@_module_angle:n {#1} }
+            }
+        }
+      \@@_output_line:n {#2}
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_slash:w}
+% 模块结束标记。结构与 \cs{@@_module_star:w} 相同。
+% \begin{arguments}
+%   \item |/|\meta{module}
+%   \item 之后的代码
+% \end{arguments}
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_module_slash:w #1 > #2 \q_stop
+    {
+      \tl_set:Nn \l_@@_tmpa_tl {#2}
+      \tl_if_eq:NNTF \l_@@_tmpa_tl \c_@@_active_cr_tl
+        {
+          \@@_output_module:nn
+            { \@@_slash_color: }
+            {
+              \@@_module_pop:n
+                { \@@_module_angle:n {#1} }
+            }
+        }
+        {
+          \@@_output_module_left:nn
+            { \@@_slash_color: }
+            {
+              \@@_module_pop:n
+                { \@@_module_angle:n {#1} }
+            }
+        }
+      \@@_output_line:n {#2}
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_at:w}
+% 名字空间。
+% \begin{arguments}
+%   \item 名字空间的名称（不含 |@@=|）
+%   \item 之后的代码
+% \end{arguments}
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_module_at:w @ @ = #1 > #2 \q_stop
+    {
+      \@@_output_module:nn
+        { \color { at@guard } }
+        { \@@_module_angle:n { @ @ = #1 } }
+%    \end{macrocode}
+% 设置名字空间为 |#1|。\cls{l3doc} 中将名字空间称为
+% “模块”（module），注意不要混淆。
+%    \begin{macrocode}
+      \tl_gset:Nn \g__codedoc_module_name_tl {#1}
+      \@@_output_line:n {#2}
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_verb:w}
+% 抄录开始。|#1|: |<|\meta{end-tag}，只有一个 |<|。
+% \meta{end-tag} 的最后会带有一个回车符 |^^M|。
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_module_verb:w #1 \q_stop
+    {
+%    \end{macrocode}
+% 重定义 \cs{@@_macro_code_process_line:}，用以输出抄录行。
+%    \begin{macrocode}
+      \cs_gset_eq:NN \@@_macro_code_process_line:
+        \@@_process_verbatim_line:
+%    \end{macrocode}
+% 设置抄录停止标记。用 \cs{tl_tail:n} 去掉开头的 |<|。
+%    \begin{macrocode}
+      \tl_gset:Nx \g_@@_macro_code_verbatim_stop_tl
+        { \c_percent_str \tl_tail:n {#1} }
+%    \end{macrocode}
+% 输出 |%<<|\meta{end-tag}。
+%    \begin{macrocode}
+      \@@_output_module:nn
+        { \color { verb@guard } }
+        {
+          \@@_swap_cr:
+          \@@_module_push:n { \l_@@_macro_code_line_tl }
+        }
+    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_pm:w}
+% 处理单独一行的模块。|<|\meta{module}|>| 放在行号的左侧。
+% \begin{arguments}
+%   \item \meta{module}
+%   \item 之后的代码
+% \end{arguments}
+%    \begin{macrocode}
+  \cs_new_protected:Npn \@@_module_pm:w #1 > #2 \q_stop
+    {
+      \@@_output_module_left:nn
+        { \@@_pm_color: }
+        { \@@_module_angle:n {#1} }
+      \@@_output_line:n {#2}
+    }
+\group_end:
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_output_line:n,\@@_output_line:}
+% 输出代码行。参数将被存入 \cs{l_@@_macro_code_line_tl}，
+% 再由不带参数的版本调用。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_output_line:n #1
+  {
+    \tl_set:Nn \l_@@_macro_code_line_tl {#1}
+%    \end{macrocode}
+% 若为空行（只含一个 |^^M|），则直接输出（换行）。
+%    \begin{macrocode}
+    \tl_if_eq:NNTF
+      \l_@@_macro_code_line_tl \c_@@_active_cr_tl
+      { \tl_use:N \l_@@_macro_code_line_tl }
+      {
+%    \end{macrocode}
+% 检查开头是否为 |%|，据此分别处理。
+%    \begin{macrocode}
+        \str_if_eq_x:nnTF
+          { \str_head:N \l_@@_macro_code_line_tl } { \c_percent_str }
+          { \@@_output_comment_line: } { \@@_output_line: }
+      }
+  }
+\cs_new_protected_nopar:Npn \@@_output_line:
+  {
+    \tex_noindent:D
+%    \end{macrocode}
+% 此处将把 |@@| 替换为相应的名字空间。
+%    \begin{macrocode}
+    \@@_replace_at_at:N \l_@@_macro_code_line_tl
+    \tl_use:N \l_@@_macro_code_line_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_output_comment_line:}
+% 输出注释代码行。用灰色、斜体显示。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_output_comment_line:
+  {
+    \tex_noindent:D
+    \group_begin:
+      \__fdudoc_swap_cr:
+      \color { code@gray } \slshape \@@_output_line:
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_replace_at_at:N,
+%   \@@_replace_at_at_aux:Nn,\@@_replace_at_at_aux:No}
+% 把 |@@| 替换为相应的名字空间。其名称存放在全局变量
+% \cs{g__codedoc_module_name_tl} 中。
+% 它为空时（|%<@@=>|），不做替换。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_replace_at_at:N #1
+  {
+    \tl_if_empty:NF \g__codedoc_module_name_tl
+      { \@@_replace_at_at_aux:No #1 \g__codedoc_module_name_tl }
+  }
+\cs_new_protected:Npn \@@_replace_at_at_aux:Nn #1#2
+  {
+%    \end{macrocode}
+% 以下代码分别对应两种名字空间的替换：
+% \begin{itemize}
+%   \item 内部变量：|\|\meta{type}|_@@_|\meta{name} $\to$
+%     |\|\meta{type}|__|\meta{namespace}|_|\meta{name}；
+%   \item 内部函数：|\@@_|\meta{name}” $\to$
+%     |\__|\meta{namespace}|_|\meta{name}”）。
+% \end{itemize}
+%    \begin{macrocode}
+    \tl_replace_all:Nnn #1 { _ @ @ } { _ _ #2 }
+    \tl_replace_all:Nnn #1 {   @ @ } { _ _ #2 }
+  }
+\cs_generate_variant:Nn \@@_replace_at_at_aux:Nn { No }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_push:n,
+%   \@@_module_push_aux:nn,\@@_module_push_aux:on}
+% 将模块名压入栈中。此处的栈主要用来处理模块名（包括抄录标记）
+% 之间的超链接。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_module_push:n
+  { \@@_module_push_aux:on { \int_use:N \c@HD@hypercount } }
+\cs_new_protected:Npn \@@_module_push_aux:nn #1
+  {
+    \seq_gpush:Nn \g_@@_module_dest_seq {#1}
+    \hypersetup { hidelinks }
+    \exp_args:Nx \hdclindex
+      { \zref@extractdefault { HD.#1 } { guard@end } { 1 } } { }
+  }
+\cs_generate_variant:Nn \@@_module_push_aux:nn { on }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_pop:n,
+%   \@@_module_pop_aux:nn,\@@_module_pop_aux:on}
+% 将模块名释放出栈。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_module_pop:n
+  {
+    \seq_gpop:NNTF \g_@@_module_dest_seq \l_@@_tmpa_tl
+      { \@@_module_pop_aux:on { \l_@@_tmpa_tl } }
+      { \BOOM \use:n }
+  }
+\cs_new_protected:Npn \@@_module_pop_aux:nn #1
+  {
+    \zref@labelbylist { HD.#1 } { fdudoc }
+    \hypersetup { hidelinks }
+    \hdclindex {#1} { }
+  }
+\cs_generate_variant:Nn \@@_module_pop_aux:nn { on }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\g_@@_module_dest_seq}
+% 存放模块名的序列（栈）。
+%    \begin{macrocode}
+\seq_new:N \g_@@_module_dest_seq
+%    \end{macrocode}
+% \end{variable}
+%
+% 处理行号超链接。使用 \pkg{zref} 宏包。
+%    \begin{macrocode}
+\zref@newlist { fdudoc }
+\zref@newprop { guard@end } [ 1 ]
+  { \int_eval:n { \c@HD@hypercount - 1 } }
+\zref@addprop { fdudoc } { guard@end }
+%    \end{macrocode}
+%
+% \paragraph{格式处理}
+%
+% \begin{macro}{\MacroFont}
+% 代码部分的字体。
+%    \begin{macrocode}
+\cs_set_protected:Npn \MacroFont
+  {
+    \linespread { 1.05 }
+    \small \ttfamily \mdseries \upshape
+    \@@_verb_addon:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_output_module:nn,\@@_output_module_left:nn}
+% 输出模块名（分行内和行号左侧两种）。
+% \begin{arguments}
+%   \item 颜色等样式
+%   \item 模块名
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_output_module:nn #1#2
+  {
+    \tex_noindent:D
+    \group_begin:
+      #1
+      \footnotesize \normalfont \sffamily #2
+    \group_end:
+  }
+\cs_new_protected:Npn \@@_output_module_left:nn #1#2
+  {
+    \tex_noindent:D
+    \hbox_overlap_left:n
+      {
+        \@@_output_module:nn {#1} {#2}
+        \skip_horizontal:n { \leftskip + \smallskipamount }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_star_color:,\@@_slash_color:,\@@_pm_color:}
+% 选择模块标记的颜色。模块标记的颜色会根据嵌套层次而改变。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_star_color:
+  {
+    \seq_gpop:NNTF \g_@@_star_color_seq \current@color
+      { \set@color }
+      { \@@_select_color: }
+    \seq_gpush:No \g_@@_slash_color_seq { \current@color }
+  }
+\cs_new_protected_nopar:Npn \@@_slash_color:
+  {
+    \seq_gpop:NNTF \g_@@_slash_color_seq \current@color
+      {
+        \set@color
+        \seq_gpush:No \g_@@_star_color_seq { \current@color }
+      }
+% TODO: 需要报错：star 与 slash 没有匹配
+      { \BOOM }
+  }
+\cs_new_protected_nopar:Npn \@@_pm_color:
+  {
+    \seq_get:NNTF \g_@@_star_color_seq \current@color
+      { \set@color }
+      {
+        \@@_select_color:
+        \seq_gpush:No \g_@@_star_color_seq { \current@color }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\g_@@_star_color_seq,\g_@@_slash_color_seq}
+% 存放模块标记颜色的序列。
+%    \begin{macrocode}
+\seq_new:N \g_@@_star_color_seq
+\seq_new:N \g_@@_slash_color_seq
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_select_color:}
+% \begin{macro}[int]{guard@series}
+% 设置模块标记的色系。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_select_color:
+  { \color { guard@series!!+ } }
+\definecolorseries { guard@series }
+  { cmyk } { last } { blue } { purple }
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% 设置色系的增量大小。可选参数 |3| 意味着基色（blue）与
+% 末色（purple）之间将等分为三份。该数字比嵌套最大深度小 1。
+%    \begin{macrocode}
+\resetcolorseries [ 3 ] { guard@series }
+%    \end{macrocode}
+%
+% \begin{macro}[int]{verb@guard,at@guard,code@gray}
+% 设置颜色。
+%    \begin{macrocode}
+\definecolor { verb@guard } { named } { MaterialLime600 }
+\definecolor { at@guard   } { named } { MaterialPink    }
+\definecolor { code@gray  } { named } { MaterialGrey    }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_module_angle:n}
+% 输出“$\langle\cdots\rangle$”。^^A\\
+%^^A 注：原来所使用的 \tn{textlangle} 和 \tn{textrangle} 在
+%^^A Source Sans Pro 字体下不可用。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_module_angle:n #1
+  { \textlangle #1 \textrangle }
+%   { < #1 > }
+%   { \ensuremath \langle #1 \ensuremath \rangle }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_code_line_no:}
+% 行号。设置为阿拉伯数字。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_code_line_no:
+  {
+    \int_gincr:N \c@CodelineNo
+    \hbox_overlap_left:n
+      {
+        \hbox_to_wd:nn
+          { \MacroIndent }
+          {
+            \HD@target
+            \tex_hss:D \@@_code_line_no_style:
+            \theCodelineNo \enspace
+          }
+        \tex_kern:D \@totalleftmargin
+      }
+  }
+\tl_set:Nn \theCodelineNo { \arabic { CodelineNo } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_code_line_no_style:}
+% 行号格式。
+%    \begin{macrocode}
+\cs_new_protected_nopar:Npn \@@_code_line_no_style:
+  { \color { code@gray } \normalfont \sffamily \tiny }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\HD@SetMacroIndent}
+% 设置代码缩进（行号一栏的宽度）。该命令会写进 |.aux| 辅助文件，
+% 以便在二次编译时确定最大行号宽度。
+%    \begin{macrocode}
+\cs_set_protected:Npn \HD@SetMacroIndent #1
+  {
+    \group_begin:
+      \settowidth \MacroIndent
+        {
+          \@@_code_line_no_style:
+          \prg_replicate:nn { \tl_count:n {#1} } { 0 }
+          \enspace
+        }
+      \dim_gset_eq:NN \MacroIndent \MacroIndent
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{\env{function} 环境}
+%
+% \begin{macro}{\@@_verb_addon:,
+%   \@@_disable_ecglue:,
+%   \@@_plain_punct_style:}
+% \begin{macro}[int]{\meta@font@select}
+% 调整文字间距，以便于让 CJK 字符占的宽度等于西文等宽字体中两个
+% 空格的宽度。需要按编译情况分别定义。
+%    \begin{macrocode}
+\sys_if_engine_xetex:TF
+  {
+    \cs_set_eq:NN \@@_verb_addon: \xeCJKVerbAddon
+    \cs_set:Nn \@@_plain_punct_style:
+      { \xeCJKsetup { PunctStyle = plain } }
+    \cs_set:Nn \@@_disable_ecglue:
+      { \xeCJKsetup { CJKecglue } }
+    \@@_appto_cmd:Nn \meta@font@select
+      { \mode_if_inner:T { \@@_disable_ecglue: } }
+  }
+  {
+    \cs_set_eq:NN \@@_verb_addon:        \prg_do_nothing:
+    \cs_set_eq:NN \@@_plain_punct_style: \prg_do_nothing:
+    \cs_set:Nn \@@_disable_ecglue:
+      { \ltjsetparameter { autoxspacing = false } }
+    \@@_appto_cmd:Nn \meta@font@select
+      { \@@_disable_ecglue: }
+  }
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{environment}{function}
+% \begin{macro}{\@@_fix_previous_depth:}
+% 调整 \env{function} 环境前后间距。
+%    \begin{macrocode}
+\BeforeBeginEnvironment { function }
+  { \par \nointerlineskip }
+\AtEndEnvironment { function }
+  {
+    \par
+    \cs_gset:Nx \@@_fix_previous_depth:
+      { \prevdepth = \the \prevdepth \space }
+  }
+\AfterEndEnvironment { function }
+  { \@@_fix_previous_depth: }
+%    \end{macrocode}
+% \end{macro}
+% \end{environment}
+%
+% \begin{environment}{syntax}
+% \begin{environment}{fdusyntax}
+% 在 \env{syntax} 和 \env{fdusyntax} 环境前设置若干活动字符。
+% \texttt{\textbar} 用于分隔多个选项，无需倾斜；|<xxx>| 表示选项，
+% |(xxx)| 表示默认选项。原来的括号用宏保存，并且使用直立字体。
+% \env{syntax} 环境另需要额外调整行距、标点样式及字符间距。
+%    \begin{macrocode}
+\AtBeginEnvironment { syntax }
+  {
+    \linespread { 1.2 }
+    \@@_plain_punct_style:
+    \@@_disable_ecglue:
+%     \char_set_catcode_active:N |
+%     \char_set_catcode_active:N (
+%     \char_set_active_eq:NN | \orbar
+%     \char_set_active_eq:NN ( \defaultval@aux
+  }
+\AtBeginEnvironment { fdusyntax }
+  {
+    \cs_set:Npn \lparen { \textup { ( } }
+    \cs_set:Npn \rparen { \textup { ) } }
+    \char_set_catcode_active:N |
+    \char_set_catcode_active:N <
+    \char_set_catcode_active:N (
+    \char_set_active_eq:NN | \orbar
+    \char_set_active_eq:NN < \syntaxopt@aux
+    \char_set_active_eq:NN ( \defaultval@aux
+  }
+%    \end{macrocode}
+% \end{environment}
+% \end{environment}
+%
+% \subsubsection{修订记录索引项}
+%
+% \begin{macro}{\@@_ltx_changes:nnn}
+% 保存 \pkg{doc} 中 \tn{changes@} 的定义。
+%    \begin{macrocode}
+\cs_new_eq:NN \@@_ltx_changes:nnn \changes@
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\changes@}
+% \changes{v0.4}{2017/07/30}{调整索引排序方式。}
+% 重定义 \tn{changes@}，在版本号一行显示修改日期。
+%    \begin{macrocode}
+\cs_set_protected:Npn \changes@ #1#2
+  {
+    \@@_save_version_date:nn {#1} {#2}
+    \@@_ltx_changes:nnn {#1} {#2}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\g_@@_version_date_prop}
+% 存放版本号与对应的修改日期。
+% key = 版本号，value = \{ 开始日期，结束日期 \}。
+% 开始日期与结束日期可以相同。
+%    \begin{macrocode}
+\prop_new:N \g_@@_version_date_prop
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_save_version_date:nn}
+% |nn| 版本最终将被 \tn{changes@} 调用。
+% \begin{arguments}
+%   \item 版本号
+%   \item 日期
+% \end{arguments}
+% 它们分别对应 \tn{change} 的前两个参数（第三个是说明文字）。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_save_version_date:nn #1#2
+  {
+    \prop_get:NnNTF \g_@@_version_date_prop
+      {#1} \l_@@_tmpa_tl
+      {
+%    \end{macrocode}
+% \cs{l_@@_tmp_tl} 相当于两个参数（开始日期、结束日期），
+% 因此需要提前展开。
+%    \begin{macrocode}
+        \exp_after:wN
+          \@@_save_version_date_aux:nnnn \l_@@_tmpa_tl
+        {#2} {#1}
+      }
+      { \@@_save_version_date_aux:nnn {#1} {#2} {#2} }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_save_version_date_aux:nnnn}
+% \begin{arguments}
+%   \item 原开始日期
+%   \item 原结束日期（显然应有 |#1| < |#2|）
+%   \item 新读入的日期
+%   \item 版本号
+% \end{arguments}
+% 如果 |#3| < |#1|，则读入日期 |#3|、|#2|；
+% 如果 |#3| > |#2|，则读入日期 |#1|、|#3|。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_save_version_date_aux:nnnn #1#2#3#4
+  {
+    \@@_if_date_later:nnTF {#1} {#3}
+      { \@@_save_version_date_aux:nnn {#4} {#3} {#2} }
+      {
+        \@@_if_date_later:nnT {#3} {#2}
+          { \@@_save_version_date_aux:nnn {#4} {#1} {#3} }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_save_version_date_aux:nnn}
+% 将版本号和日期存入 \cs{g_@@_version_date_prop}。
+% \begin{arguments}
+%   \item 版本号
+%   \item 开始日期
+%   \item 结束日期
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_save_version_date_aux:nnn #1#2#3
+  { \prop_gput:Nnn \g_@@_version_date_prop {#1} { {#2} {#3} } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[TF]{\@@_if_date_later:nn}
+% \begin{macro}{\@@_parse_date:w}
+% 比较两个日期。如果 |#1| 在 |#2| 之后，则为 |true|；反之为 |false|。
+% 日期的格式为 YYYY/MM/DD。比较方法是直接将日期化成 8 位数字，
+% 所以月、日前的 0 不可以省略。
+%    \begin{macrocode}
+\prg_new_conditional:Npnn \@@_if_date_later:nn #1#2 { TF, T }
+  {
+    \if_int_compare:w
+        \@@_parse_date:w #1 / / / 0 \q_stop >
+        \@@_parse_date:w #2 / / / 0 \q_stop \exp_stop_f:
+      \prg_return_true:
+    \else:
+      \prg_return_false:
+    \fi:
+  }
+\cs_new:Npn \@@_parse_date:w #1/#2/#3/ #4 \q_stop
+  { #1#2#3 }
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}[int]{\CTEX@versionitem}
+% 版本条目标签。如果版本号不在 \cs{g_@@_version_date_prop} 的
+% key 里面，则利用未定义的 \cs{BOOM} 报错。
+%    \begin{macrocode}
+\cs_new_protected:Npn \CTEX@versionitem #1 \efill
+  {
+    \@idxitem
+    \prop_get:NnNTF \g_@@_version_date_prop
+      {#1} \l_@@_tmpa_tl
+      {
+        \exp_after:wN
+          \@@_print_version_date:nnn \l_@@_tmpa_tl
+        {#1}
+      }
+      { \BOOM }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_print_version_date:nnn}
+% 输出版本号和日期。如果开始日期和结束日期相同，则只输出一项。
+% \begin{arguments}
+%   \item 开始日期
+%   \item 结束日期
+%   \item 版本号
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_print_version_date:nnn #1#2#3
+  {
+    \noindent
+    \Hy@raisedlink { \belowpdfbookmark {#3} { HD.#3 } }
+    \textbf {#3} \hfill
+    \hbox:n
+      {
+        \footnotesize
+        \str_if_eq:nnTF {#1} {#2}
+          { ( #1 ) } { ( #1 ~ -- ~ #2 ) }
+      }
+    \par \nopagebreak
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\HDorg@theglossary}
+% 该命令由 \pkg{hypdoc} 宏包定义，用于存放标准文档类 \cls{book}
+% 中定义的 \tn{theindex} 命令。
+% 此处的补丁将在版本号一行最后加上修改日期。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \HDorg@theglossary
+  { \let \item \@idxitem }
+  { \let \item \CTEX@versionitem }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\@wrglossary}
+% 该命令由 \LaTeXe{} 内核定义，又由 \pkg{hypdoc} 宏包作了修改。
+% 此处的补丁使得修订记录条目的页码能够指向对应行。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \@wrglossary
+  { hdpindex }
+  {
+    \ifnum \c@HD@hypercount = \z@
+      hdpindex
+    \else
+      hdclindex { \the \c@HD@hypercount }
+    \fi
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{命令补丁}
+%
+% \paragraph{\LaTeXe{} 补丁}
+%
+% \begin{macro}[int]{\@addtocurcol}
+% 调整浮动体、代码等与文字的间距。
+% 见 \url{http://tex.stackexchange.com/a/40896}。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \@addtocurcol
+  { \vskip \intextsep }
+  {
+    \edef \save@first@penalty { \the \lastpenalty } \unpenalty
+    \ifnum \lastpenalty = \@M
+      \unpenalty
+    \else
+      \penalty \save@first@penalty \relax
+    \fi
+    \ifnum \outputpenalty < -\@Mii
+      \addvspace\intextsep
+      \vskip\parskip
+    \else
+      \addvspace\intextsep
+    \fi
+  }
+\ctex_patch_cmd:Nnn \@addtocurcol
+  {
+    \vskip \intextsep
+    \ifnum \outputpenalty < -\@Mii
+      \vskip -\parskip
+    \fi
+  }
+  {
+    \ifnum \outputpenalty < -\@Mii
+      \aftergroup \vskip \aftergroup \intextsep
+      \aftergroup \nointerlineskip
+    \else
+      \vskip \intextsep
+    \fi
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\@getpen}
+% 将换行或换页的最大罚值由 \num{10000} 改为 \num{10001}。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \@getpen { \@M } { \@Mi }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\l@section,\l@subsection}
+% 修改目录条目的缩进。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \l@section    { 2.5em } { 1.5em }
+\ctex_patch_cmd:Nnn \l@subsection { 2.5em } { 1.5em }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\@thehead}
+% 修改页眉，禁用 \tn{MakeUppercase}。
+%    \begin{macrocode}
+\@@_preto_cmd:Nn \@thehead
+  { \cs_set_eq:cN { MakeUppercase \space } \@iden }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\thebibliography}
+% \begin{macro}[int]{\HDorg@thebibliography}
+% 参考文献一节需要编号。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \HDorg@thebibliography
+  { \section* } { \section }
+\cs_set_eq:NN \thebibliography \HDorg@thebibliography
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\GlossaryParms}
+% 修改修订记录中的一些缩进。
+%    \begin{macrocode}
+\@@_appto_cmd:Nn \GlossaryParms
+  {
+    \raggedcolumns
+    \cs_set_eq:NN \Hy@writebookmark \HDorg@writebookmark
+    \cs_set:Npn \@idxitem   { \par \hangindent 2em }
+    \cs_set:Npn \subitem    { \@idxitem \hspace* { 1em } }
+    \cs_set:Npn \subsubitem { \@idxitem \hspace* { 2em } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\HoLogo@LaTeXe}
+% 由于使用了 \pkg{unicode-math}，需要额外修改 \pkg{hologo} 中的
+% \tn{LaTeXe} 命令，以使粗体正常显示。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \HoLogo@LaTeXe
+  { \hbox { \HOLOGO@MathSetup 2 $ _{ \textstyle \varepsilon } $ } }
+  {
+    \hbox
+      {
+        \mathsurround 0pt \relax
+        2
+        \if b \expandafter \@car \f@series \@nil
+          $ _{ \textstyle \symbf { \varepsilon } } $
+        \else
+          $ _{ \textstyle \varepsilon } $
+        \fi
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\SpecialMainEnvIndex}
+% 索引汉化。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \SpecialMainEnvIndex
+  { (environment) } { ~ 环境 }
+\ctex_patch_cmd:Nnn \SpecialMainEnvIndex
+  { environments: } { 环境： }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\HDorg@SpecialEnvIndex}
+% \pkg{hypdoc} 宏包重新定义了 \tn{SpecialEnvIndex} 命令，因此需要
+% 修改内部定义。
+%    \begin{macrocode}
+\ctex_patch_cmd:Nnn \HDorg@SpecialEnvIndex
+  { (environment) } { ~ 环境 }
+\ctex_patch_cmd:Nnn \HDorg@SpecialEnvIndex
+  { environments: } { 环境： }
+%    \end{macrocode}
+% \end{macro}
+%
+% \paragraph{\cls{l3doc} 补丁}
+%
+%    \begin{macrocode}
+%<@@=codedoc>
+%    \end{macrocode}
+%
+% \begin{macro}{\list}
+% \cls{l3doc} 会设置列表环境中 \tn{listparindent} |=| \tn{z@}，
+% 这里将其恢复。
+%    \begin{macrocode}
+\cs_set_eq:NN \list \@@_oldlist:nn
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_function_descr_start:w}
+% 抑制首段的 \tn{parskip}。
+%    \begin{macrocode}
+\__fdudoc_patch_cmd:Nnn \@@_function_descr_start:w
+  { \noindent }
+  { \skip_vertical:n { -\parskip } \noindent }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_function_assemble:}
+% 在 \cls{l3doc} 中，\env{function} 环境里的 \env{syntax} 和
+% \env{descr} 盒子中间存在一段 \tn{med\-skip\-amount} 的距离。
+% 但是如果 \env{syntax} 盒子为空（未使用 \env{syntax} 环境），
+% 就会显得不好看。此时通过把 \tn{medskipamount} 设置为零来修正。
+% 若盒子非空，则把 \tn{parskip} 还回去。
+%    \begin{macrocode}
+\__fdudoc_preto_cmd:Nn \@@_function_assemble:
+  {
+    \box_if_empty:NTF \g_@@_syntax_box
+      { \skip_zero:N \medskipamount }
+      { \skip_add:Nn \medskipamount { \parskip } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_typeset_functions:}
+% 调整 \env{function} 环境的字体。
+%    \begin{macrocode}
+\__fdudoc_patch_cmd:Nnn \@@_typeset_functions:
+  { \small \ttfamily } { \footnotesize \CodeFont }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_typeset_functions:,\@@_macro_init:,
+%   \@@_macro_dump:}
+% 左侧边注的函数列表采用单倍行距。
+%    \begin{macrocode}
+\__fdudoc_preto_cmd:Nn \@@_typeset_functions:
+  { \MacroFont }
+\__fdudoc_patch_cmd:Nnn \@@_macro_init:
+  { \hbox:n } { \MacroFont \hbox:n }
+\__fdudoc_patch_cmd:Nnn \@@_macro_dump:
+  { \hbox_unpack_clear:N } { \MacroFont \hbox_unpack_clear:N }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_macro_end_style:n}
+% 禁止显示 \env{macro} 环境最后的 “(\emph{End definition for ...})”。
+%    \begin{macrocode}
+\cs_set_eq:NN \@@_macro_end_style:n \use_none:n
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_typeset_TF:}
+% 关闭 |TF| 上的超链接，并且保证颜色与函数主体一致。
+%    \begin{macrocode}
+\cs_set_protected:Npn \@@_typeset_TF:
+  {
+    \group_begin:
+      \exp_args:No \@@_if_macro_internal:nT \l_@@_tmpa_tl
+        { \color [ gray ] { 0.5 } }
+      \itshape TF
+      \makebox [ 0 pt ] [ r ]
+        {
+          \color { red }
+          \underline { \phantom { \itshape TF } \kern -0.1 em }
+        }
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_macro_typeset_one:nN}
+% 在 \env{macro} 环境的侧边栏中，\cls{l3doc} 根据命令的长短，分别用
+% 普通字体和紧缩字体输出。然而很长的命令还是会超出页边。这里用缩放
+% 盒子的手段使得长命令也可正常显示。
+%    \begin{macrocode}
+\cs_set_protected:Npn \@@_macro_typeset_one:nN #1#2
+  {
+    \vbox_set:Nn \l_@@_macro_box
+      {
+        \MacroFont
+        \vbox_unpack_clear:N \l_@@_macro_box
+        \hbox_set:Nn \l_tmpa_box
+          { \@@_print_macroname:nN {#1} #2 }
+%    \end{macrocode}
+% \tn{marginparwidth} 和 \tn{marginparsep} 分别是边注的宽度及其到
+% 版心的距离，\tn{la\-bel\-sep} 则是编号盒子右端与条目首行文本之间
+% 的距离。
+%    \begin{macrocode}
+        \dim_set:Nn \l_tmpa_dim
+          { \marginparwidth - \labelsep - \marginparsep }
+        \dim_compare:nNnT { \box_wd:N \l_tmpa_box } > \l_tmpa_dim
+          {
+            \box_resize_to_wd_and_ht:Nnn \l_tmpa_box
+              { \l_tmpa_dim } { \box_ht:N \l_tmpa_box }
+          }
+        \hbox_overlap_left:n
+          {
+            \box_use:N \l_tmpa_box
+            \skip_horizontal:n { \marginparsep - \labelsep }
+          }
+      }
+    \int_incr:N \l_@@_macro_int
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_print_macroname:nN}
+% 该函数不再需要根据命令的长短切换字体。
+%    \begin{macrocode}
+\cs_set_protected:Npn \@@_print_macroname:nN #1#2
+  {
+    \strut
+    \@@_get_hyper_target:xN
+      {
+        \exp_not:n {#1}
+        \bool_if:NT #2 { \tl_to_str:n {TF} }
+      }
+      \l_@@_tmpa_tl
+    \cs_if_exist:cTF { r@ \l_@@_tmpa_tl }
+      { \exp_args:NNo \label@hyperref [ \l_@@_tmpa_tl ] }
+      { \use:n }
+      {
+        \tl_set:Nn \l_@@_tmpa_tl {#1}
+%    \end{macrocode}
+% 命令中的空格改用“\textvisiblespace”显示。
+%    \begin{macrocode}
+        \tl_replace_all:Non \l_@@_tmpa_tl
+          { \c_catcode_other_space_tl }
+          { \fontspec_visible_space: }
+        \@@_macroname_prefix:o \l_@@_tmpa_tl
+        \@@_macroname_suffix:N #2
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_special_index_module:nnnnN}
+% 索引汉化。
+%    \begin{macrocode}
+\cs_set_protected:Npn \@@_special_index_module:nnnnN #1#2#3#4#5
+  {
+    \use:x
+      {
+        \exp_not:n { \@@_special_index_aux:nnnnnnn {#1} {#2} }
+          \tl_if_empty:nTF {#3}
+            { { } { } { } { } }
+            {
+              \str_if_eq_x:nnTF {#3} { TeX }
+                {
+                  { TeX~ and~ LaTeX2e }
+                  { \string \TeX{}~ 和~ \string \LaTeXe{} }
+                }
+                { {#3} { \string \pkg {#3} } }
+              \bool_if:NTF #5
+                { { commands~ internal } { ~ 内部命令： } }
+                { { commands           } { ~ 命令：     } }
+            }
+      }
+    {#4}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_special_index_aux:nnnnnnn}
+% 该函数在 \cls{l3doc} 中本来只有 6 个参数。这里增加了一个，用来辅助
+% 排序。
+% \begin{arguments}
+%   \item 键（即宏名称字符串，用来排序）
+%   \item 宏名称
+%   \item 索引头排序字符串（排序）
+%   \item 索引头文字
+%   \item 索引头后缀字符串（排序，新增）
+%   \item 索引头后缀文字
+%   \item 索引类型（\opt{main}/\opt{usage} 等）
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_special_index_aux:nnnnnnn #1#2#3#4#5#6#7
+  {
+    \tl_set:Nn \l_@@_index_escaped_key_tl {#1}
+    \@@_quote_special_char:N \l_@@_index_escaped_key_tl
+    \@@_special_index_set:Nn
+      \l_@@_index_escaped_macro_tl {#2}
+    \str_if_eq:onTF { \@currenvir } { macrocode }
+      { \codeline@wrindex }
+      {
+        \str_case:nnF {#7}
+          {
+            { main  } { \codeline@wrindex }
+            { usage } { \index }
+          }
+          { \HD@target \index }
+      }
+      {
+        \tl_if_empty:nF { #3 #4 #5 #6 }
+          { #3 #5 \actualchar #4 #6 \levelchar }
+        \l_@@_index_escaped_key_tl
+        \actualchar
+        {
+          \token_to_str:N \verbatim@font \c_space_tl
+          \l_@@_index_escaped_macro_tl
+        }
+        \encapchar
+        hdclindex { \the \c@HD@hypercount } {#7}
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{杂项}
+%
+% \begin{macro}{\StopSpecialIndexModule,
+%   \@@_special_index_module:nnnnN}
+% 不对 \cs{cs} 和 \cs{tn} 等编索引。用于目录、索引等。
+%    \begin{macrocode}
+\DeclareDocumentCommand \StopSpecialIndexModule { }
+  {
+    \cs_set_eq:NN
+      \@@_special_index_module:nnnnN \use_none:nnnnn
+  }
+\tl_map_inline:nn { \actualchar \encapchar \levelchar }
+  { \exp_args:Nx \DoNotIndex { \bslash \tl_to_str:N #1 } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\meta}
+% 重定义 \cs{meta} 命令，需要禁用中文、西文之间的空格，
+% 并确保为罗马字体族。
+%    \begin{macrocode}
+\RenewDocumentCommand \meta { m }
+  {
+    \group_begin:
+      \sys_if_engine_xetex:T { \xeCJKsetup { CJKecglue = { } } }
+      \rmfamily \@@_meta:n {#1}
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 重定向 \cls{l3doc} 中的一些提示信息。
+%    \begin{macrocode}
+\msg_redirect_name:nnn { l3doc } { foreign-internal    } { log }
+\msg_redirect_name:nnn { l3doc } { print-changes-howto } { log }
+\msg_redirect_name:nnn { l3doc } { print-index-howto   } { log }
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+%<@@=>
+\ExplSyntaxOff
+%    \end{macrocode}
+%
+% \subsubsection{排版样式设置}
+%
+% 目录中禁止对 \cs{cs} 和 \cs{tn} 等的索引。
+%    \begin{macrocode}
+\AtBeginDocument{%
+  \addtocontents{toc}{\StopSpecialIndexModule}}
+%    \end{macrocode}
+%
+% \begin{macro}{\path,\opt,\kaishu}
+% 设置 PDF 字符串中的命令替换。
+%    \begin{macrocode}
+\pdfstringdefDisableCommands{%
+  \let\path\meta
+  \let\opt\@firstofone
+  \let\kaishu\relax}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\@makefntext}
+% 调整脚注文本缩进。
+%    \begin{macrocode}
+\renewcommand\@makefntext[1]{\parindent 0em\noindent\@makefnmark~#1}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\IndexLayout,\indexname}
+% 调整索引外观。
+%    \begin{macrocode}
+\IndexPrologue{%
+  \section{\indexname}%
+  \textit{无衬线字体的数字表示对应索引项出现的页码；
+    带下划线的数字表示定义对应索引项的代码行号；
+    其他普通数字则表示使用对应索引项的代码行号．}}
+\def\IndexLayout{%
+  \newgeometry{%
+    left   = 0.85 in,
+    right  = 0.85 in,
+    top    = 1.25 in,
+    bottom = 1.00 in}%
+  \setlength\IndexMin{0.5\textheight}%
+  \ctexset{section/numbering=false}%
+  \StopSpecialIndexModule}
+\def\indexname{代码索引}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\usage}
+% 控制“描述对应索引项的页码”样式。在 \pkg{doc} 宏包中的定义为
+% \tn{textit}。
+%    \begin{macrocode}
+\def\usage#1{\textsf{#1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\glossaryname}
+% 调整修订记录外观。
+%    \begin{macrocode}
+\GlossaryPrologue{\section{\glossaryname}}
+\def\glossaryname{修订记录}
+%    \end{macrocode}
+% \end{macro}
+%
+% 西文字体。
+%    \begin{macrocode}
+\setmainfont{TeX Gyre Pagella}
+\setsansfont{TeX Gyre Heros}
+\setmathfont{TeX Gyre Pagella Math}
+%    \end{macrocode}
+%
+% \begin{macro}{\kaishu,\fangsong}
+% 中文字体。
+%    \begin{macrocode}
+\setCJKmainfont{FZShuSong-Z01}%
+  [
+    BoldFont       = FZHei-B01,
+    ItalicFont     = FZKai-Z03,
+    BoldItalicFont = FZKai-Z03
+  ]
+\setCJKsansfont{FZHei-B01}%
+  [
+    BoldFont       = FZHei-B01,
+    ItalicFont     = FZKai-Z03,
+    BoldItalicFont = FZKai-Z03
+  ]
+\setCJKmonofont{FZFangSong-Z02}%
+  [
+    BoldFont       = FZHei-B01,
+    ItalicFont     = FZKai-Z03,
+    BoldItalicFont = FZKai-Z03
+  ]
+\newCJKfontfamily\kaishu{FZKai-Z03}%
+  [BoldFont = *, ItalicFont = *, BoldItalicFont = *]
+\newCJKfontfamily\fangsong{FZFangSong-Z02}%
+  [BoldFont = *, ItalicFont = *, BoldItalicFont = *]
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\CodeFont}
+% \begin{macro}[int]{\fdudoc@code@font,\fdudoc@cjk@code@font}
+% 代码部分的字体，这里用了两种系列。
+%    \begin{macrocode}
+\setmonofont{CMU Typewriter Text}%
+  [
+    UprightFont = * Light,
+    BoldFont    = * Bold,
+    SlantedFont = * Light Oblique,
+    HyphenChar  = None
+  ]
+\newfontfamily\fdudoc@code@font{Source Code Pro}%
+  [BoldFont = * Semibold]
+\newCJKfontfamily\fdudoc@cjk@code@font{Source Han Sans SC}%
+  [BoldFont = * Bold, AutoFakeSlant = 0.22]
+\newcommand*\CodeFont{\fdudoc@code@font\fdudoc@cjk@code@font}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% 中文排版格式（\pkg{ctex} 宏包）。
+%    \begin{macrocode}
+\ctexset
+  {
+    section = {name = {第,节}, format+ = \raggedright},
+    subsubsection/tocline = {\kaishu\CTEXnumberline{#1}#2},
+    paragraph = {runin = false, numbering = false}
+  }
+%    \end{macrocode}
+%
+% 设定章节标题、目录深度。
+%    \begin{macrocode}
+\setcounter{secnumdepth}{4}
+\setcounter{tocdepth}{3}
+%    \end{macrocode}
+%
+% 单位设置（\pkg{siunitx} 宏包）。
+%    \begin{macrocode}
+\sisetup
+  {
+    number-math-rm       = \ensuremath,
+    inter-unit-product   = \ensuremath{{}\cdot{}},
+    group-digits         = true,
+    group-minimum-digits = 4,
+    group-separator      = \text{~},
+    range-phrase         = \symbol{"FF5E},
+    separate-uncertainty = true
+  }
+%    \end{macrocode}
+%
+% 超链接设置（\pkg{hyperref} 宏包）。
+%    \begin{macrocode}
+\hypersetup
+  {
+    bookmarksdepth    = 4,
+    bookmarksnumbered = true,
+    colorlinks        = true,
+    citecolor         = MaterialGreen,
+    linkcolor         = MaterialPink,
+    urlcolor          = MaterialIndigo
+  }
+%    \end{macrocode}
+%
+% 浮动体标题设置（\pkg{caption} 宏包）。
+%    \begin{macrocode}
+\captionsetup{labelsep = quad, labelfont+ = bf}
+%    \end{macrocode}
+%
+% 设置标准列表环境样式。
+%    \begin{macrocode}
+\setlist{noitemsep, topsep=\smallskipamount}
+\setlist[1]{labelindent=\parindent}
+\setlist[enumerate]{leftmargin=*}
+\setlist[itemize]{leftmargin=*}
+%    \end{macrocode}
+%
+% \begin{environment}{optdesc}
+% 用于描述各选项。设置条目间距为 \tn{marginparsep}，与
+% \cls{l3doc} 一致。
+%    \begin{macrocode}
+\newlist{optdesc}{description}{3}
+\setlist[optdesc]{%
+  font=\mdseries\small\ttfamily, align=right,
+  listparindent=\parindent,
+  labelsep=\marginparsep, labelindent=-\marginparsep,
+  leftmargin=*}
+%    \end{macrocode}
+% \end{environment}
+%
+% \begin{environment}{tablenotes}
+% \begin{variable}{tpt@id}
+% 重新定义 \pkg{threeparttable} 包的 \env{tablenotes} 环境，
+% 用于表格的注释。
+%    \begin{macrocode}
+\renewlist{tablenotes}{description}{1}
+\setlist[tablenotes]{%
+  format=\normalfont\tnote@item, align=right,
+  listparindent=\parindent, labelindent=\tabcolsep,
+  leftmargin=*, rightmargin=\tabcolsep,
+  after=\@noparlisttrue}
+\AtBeginEnvironment{tablenotes}{%
+  \setlength\parindent{2\ccwd}%
+  \normalfont\footnotesize}
+\AtBeginEnvironment{threeparttable}{%
+  \stepcounter{tpt@id}%
+  \edef\curr@tpt@id{tpt@\arabic{tpt@id}}}
+\newcounter{tpt@id}
+%    \end{macrocode}
+% \end{variable}
+% \end{environment}
+%
+% \begin{macro}[int]{\tnote@item,\TPTtagStyle}
+% 为 \tn{tnote} 增加超链接。
+%    \begin{macrocode}
+\def\tnote@item#1{%
+  \Hy@raisedlink{\hyper@anchor{\curr@tpt@id-#1}}#1}
+\def\TPTtagStyle#1{\hyperlink{\curr@tpt@id-#1}{#1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\UrlAlphabet,\UrlDigits}
+% 网址断行。\tn{UrlOrds}、\tn{UrlAlphabet} 和 \tn{UrlDigits}
+% 分别记录了特殊符号、字母和数字，把它们依次附加在 \pkg{url} 宏包
+% 提供的命令 \tn{UrlBreaks} 之后，即可允许在这些位置处断行。与
+% \cs{fdu_allow_url_break:} 的原理是相同的。
+%    \begin{macrocode}
+\def\UrlAlphabet{%
+  \do\a\do\b\do\c\do\d\do\e\do\f\do\g\do\h\do\i\do\j%
+  \do\k\do\l\do\m\do\n\do\o\do\p\do\q\do\r\do\s\do\t%
+  \do\u\do\v\do\w\do\x\do\y\do\z\do\A\do\B\do\C\do\D%
+  \do\E\do\F\do\G\do\H\do\I\do\J\do\K\do\L\do\M\do\N%
+  \do\O\do\P\do\Q\do\R\do\S\do\T\do\U\do\V\do\W\do\X%
+  \do\Y\do\Z}
+\def\UrlDigits{%
+  \do\1\do\2\do\3\do\4\do\5\do\6\do\7\do\8\do\9\do\0}
+\g@addto@macro\UrlBreaks{\UrlOrds}
+\g@addto@macro\UrlBreaks{\UrlAlphabet}
+\g@addto@macro\UrlBreaks{\UrlDigits}
+%    \end{macrocode}
+% \end{macro}
+%
+% 不对下列各项添加索引。
+%    \begin{macrocode}
+\DoNotIndex{\begin,\end,
+  \a,\b,\c,\d,\e,\f,\g,\h,\i,\j,\k,\l,\m,
+  \n,\o,\p,\q,\r,\s,\t,\u,\v,\w,\x,\y,\z,
+  \A,\B,\C,\D,\E,\F,\G,\H,\I,\J,\K,\L,\M,
+  \N,\O,\P,\Q,\R,\S,\T,\U,\V,\W,\X,\Y,\Z,
+  \0,\1,\2,\3,\4,\5,\6,\7,\8,\9}
+%    \end{macrocode}
+%
+% 启用索引、交叉引用、历史记录。
+%    \begin{macrocode}
+\EnableCrossrefs
+\CodelineIndex
+\RecordChanges
+%    \end{macrocode}
+%
+% \subsubsection{文档层命令}
+%
+% \begin{macro}{\exptarget,\rexptarget,\expstar,\rexpstar,
+%   \__codedoc_typeset_exp:,\__codedoc_typeset_rexp:}
+% 部分命令之后的星号（$\star$ 或 \ding{73}），表明其不同用法。
+% 这里的“exp”和“rexp”分别源自 \LaTeX3 中的“expandable”
+% 和“restricted-expandable”。
+%    \begin{macrocode}
+\newcommand*\exptarget{\Hy@raisedlink{\hypertarget{expstar}{}}}
+\newcommand*\rexptarget{\Hy@raisedlink{\hypertarget{rexpstar}{}}}
+\newcommand*\expstar{\hyperlink{expstar}{$\star$}}
+\newcommand*\rexpstar{\hyperlink{rexpstar}{\ding{73}}}
+% TODO: (2017/08/12) 允许修改 exptstar 和 rexpstar
+\renewcommand*\expstar{\hyperlink{expstar}{$\mfrake$}}
+\renewcommand*\rexpstar{\hyperlink{rexpstar}{$\mfrakc$}}
+\ExplSyntaxOn
+\cs_set_eq:NN \__codedoc_typeset_exp:  \expstar
+\cs_set_eq:NN \__codedoc_typeset_rexp: \rexpstar
+\ExplSyntaxOff
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\marg,\oarg,\parg}
+% 几种命令参数：
+% \begin{itemize}
+%   \item 必选参数：|{|\meta{arg}|}|；
+%   \item 可选参数：|[|\meta{arg}|]|；
+%   \item 图形参数：|(|\meta{arg}|)|。
+% \end{itemize}
+%    \begin{macrocode}
+\renewcommand*\marg[1]{\{\meta{#1}\}}
+\renewcommand*\oarg[1]{[\meta{#1}]}
+\renewcommand*\parg[1]{(\meta{#1})}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\opt}
+% 选项名。
+%    \begin{macrocode}
+\DeclareDocumentCommand\opt{m}{\texttt{#1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\kvopt}
+% \meta{key} |=| \meta{value} 型选项。
+%    \begin{macrocode}
+\DeclareDocumentCommand\kvopt{mm}
+  {\texttt{#1\breakablethinspace=\breakablethinspace#2}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\breakablethinspace}
+% 允许换行的细间距。
+%    \begin{macrocode}
+\def\breakablethinspace{\hskip 0.16667em\relax}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\syntaxopt,\defaultval}
+% \begin{macro}[int]{\syntaxopt@aux,\defaultval@aux}
+% \env{syntax} 中的选项及命令选项。
+% |aux| 结尾的两个命令用于定义利用 |<>| 和 |()| 的简写形式。
+%    \begin{macrocode}
+\def\syntaxopt#1{\textit{#1}}
+\def\defaultval#1{\textbf{\textup{#1}}}
+\def\syntaxopt@aux#1>{\syntaxopt{#1}}
+\def\defaultval@aux#1){\defaultval{#1}}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\orbar,\TF,\TTF,\TFF}
+% \env{syntax} 中的选项分隔符，以及 \opt{true} 或 \opt{false}
+% 选项的几种快捷方式。
+%    \begin{macrocode}
+\def\orbar{\textup{\textbar}}
+\def\TF{true\orbar false}
+\def\TTF{\defaultval{true}\orbar false}
+\def\TFF{true\orbar\defaultval{false}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{environment}{arguments}
+% 放在 \env{macro} 环境中，用于描述对应命令的参数。
+% \cls{l3doc} 中的定义 \opt{labelsep} 设置不太合理，会使标签被覆盖，
+% 这里重新定义。
+%    \begin{macrocode}
+\DeclareDocumentEnvironment{arguments}{}
+  {\enumerate[%
+    label={\texttt{\#\arabic*:~}}, labelsep=0pt, nolistsep]}%
+  {\endenumerate}
+%    \end{macrocode}
+% \end{environment}
+%
+% \begin{macro}{\TeX,\LaTeX,\LaTeXe,
+%   \pdfTeX,\pdfLaTeX,\XeTeX,\XeLaTeX,\LuaTeX,\LuaLaTeX,
+%   \AmSLaTeX,\TeXLive,\MiKTeX,\BibTeX,\biber,\TikZ}
+% \TeX{} 相关标志。
+%    \begin{macrocode}
+\def\TeX{\hologo{TeX}}
+\def\LaTeX{\hologo{LaTeX}}
+\def\LaTeXe{\hologo{LaTeXe}}
+\def\pdfTeX{\hologo{pdfTeX}}
+\def\pdfLaTeX{\hologo{pdfLaTeX}}
+\def\XeTeX{\hologo{XeTeX}}
+\def\XeLaTeX{\hologo{XeLaTeX}}
+\def\LuaTeX{\hologo{LuaTeX}}
+\def\LuaLaTeX{\hologo{LuaLaTeX}}
+\def\AmSLaTeX{\hologo{AmSLaTeX}}
+\def\TeXLive{\TeX\ Live}
+\def\MiKTeX{\hologo{MiKTeX}}
+\def\BibTeX{\hologo{BibTeX}}
+\def\BibTeX{\hologo{BibTeX}}
+\def\biber{\hologo{biber}}
+%    \end{macrocode}
+% 该定义来自 \file{pgfmanual-en-macros.tex}。
+%    \begin{macrocode}
+\def\TikZ{Ti\emph{k}Z}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\cs,\tn}
+% \begin{macro}[int]{\codedoc@cs,\codedoc@tn}
+% 控制序列。
+%^^A Colors are used for debug.
+%    \begin{macrocode}
+% \let\codedoc@cs=\cs
+% \let\codedoc@tn=\tn
+% \renewcommand*\cs[2][]{%
+%   \textcolor{MaterialIndigo}{\codedoc@cs[#1]{#2}}}
+% \renewcommand*\tn[2][]{%
+%   \textcolor{MaterialPink}{\codedoc@tn[#1]{#2}}}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\file,\env,\pkg,\cls}
+% 文件、环境、宏包、文档类。
+%    \begin{macrocode}
+% \renewcommand*\file[1]{%
+%   \textcolor{MaterialGrey900}{\texttt{#1}}}
+\renewcommand*\env[1]{\textbf{\texttt{#1}}}
+% \renewcommand*\pkg[1]{\textsf{#1}}
+% \renewcommand*\cls[1]{\textit{\textsf{#1}}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\bashcmd}
+% Bash 中的命令。
+%    \begin{macrocode}
+\newcommand*\bashcmd[1]{\texttt{#1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\scite}
+% 位于上标的文献引用。
+%    \begin{macrocode}
+\newcommand*\scite[1]{\textsuperscript{\cite{#1}}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{environment}{quote*}
+% 引述环境。
+% \begin{arguments}
+%   \item 作者
+%   \item 朝代
+% \end{arguments}
+%    \begin{macrocode}
+\DeclareDocumentEnvironment{quote*}{oo}
+  {\quote\fangsong\qquad}%
+  {\endquote\IfNoValueF{#1}{%
+    \hfill —— \IfNoValueF{#2}{〔#2〕}#1}}
+%    \end{macrocode}
+% \end{environment}
+%
+% \paragraph{示例代码环境}
+%
+% \pkg{listings} 宏包中连字符 |-| 原本以数学模式输出，
+% 此处改为普通文本。
+% 见 \url{https://tex.stackexchange.com/a/33188/136923}。
+%    \begin{macrocode}
+\lst@CCPutMacro\lst@ProcessOther {"2D}{\lst@ttfamily{-{}}{-{}}}
+\@empty\z@\@empty
+%    \end{macrocode}
+%
+% \changes{v0.5}{2017/09/05}{[\pkg{fdudoc}] 移除 \pkg{listings}
+%   关键字定义文件。}
+%
+% 定义几种代码样式。
+% \begin{macro}[int]{style@base}
+%    \begin{macrocode}
+\lstdefinestyle{style@base}
+  {
+    extendedchars   = true,
+    gobble          = 3,
+    lineskip        = 2 pt,
+    frame           = l,
+    framerule       = 1 pt,
+    framesep        = 0 pt,
+    escapeinside    = {(*}{*)},
+    basicstyle      = \small\CodeFont\color{MaterialGrey900},
+    keywordstyle    = \bfseries\color{MaterialIndigo},
+    commentstyle    = \itshape\color{MaterialGrey600},
+    stringstyle     = \color{MaterialRed},
+    backgroundcolor = \color{MaterialGrey50}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{style@shell}
+%    \begin{macrocode}
+\lstdefinestyle{style@shell}
+  {
+    style      = style@base,
+    rulecolor  = \color{MaterialPink},
+    language   = bash,
+    alsoletter = {-},
+    emphstyle  = \color{MaterialGreen800}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{style@latex}
+%    \begin{macrocode}
+\lstdefinestyle{style@latex}
+  {
+    style      = style@base,
+    rulecolor  = \color{MaterialIndigo},
+    language   = [LaTeX]TeX,
+    alsoletter = {*, -},
+    texcsstyle = *\color{MaterialDeepOrange},
+    emphstyle  = [1]\color{MaterialGreen800},
+    emphstyle  = [2]\color{MaterialTeal}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{style@syntax}
+%    \begin{macrocode}
+\lstdefinestyle{style@syntax}
+  {
+    extendedchars = true,
+    gobble        = 6,
+    escapeinside  = {(*}{*)},
+    language      = [LaTeX]TeX,
+    alsoletter    = {*, -},
+    basicstyle    = \footnotesize\CodeFont\color{MaterialGrey900},
+    keywordstyle  = \bfseries\color{MaterialIndigo},
+    commentstyle  = \itshape\color{MaterialGrey600},
+    texcsstyle    = *\color{MaterialDeepOrange},
+    emphstyle     = [1]\color{MaterialGreen800},
+    emphstyle     = [2]\color{MaterialTeal}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{environment}{shellexample}
+% \begin{environment}{latexexample}
+% Shell 和 \LaTeX{} 示例代码。
+%    \begin{macrocode}
+\lstnewenvironment{shellexample}[1][]{%
+  \lstset{style=style@shell, #1}}{}
+\lstnewenvironment{latexexample}[1][]{%
+  \lstset{style=style@latex, #1}}{}
+%    \end{macrocode}
+% \end{environment}
+% \end{environment}
+%
+% \begin{environment}{fdusyntax}
+% 语法说明。用于代替 \cls{l3doc} 中的 \env{syntax} 环境。
+%    \begin{macrocode}
+\lstnewenvironment{fdusyntax}[1][]{%
+  \lstset{style=style@syntax, #1}\vspace{-1.8ex}}{}
+%</doc>
+%    \end{macrocode}
+% \end{environment}
+%
+% \subsubsection{\pkg{latexmk} 配置文件}
+%
+%    \begin{macrocode}
+%<*latexmk|latexmk-en>
+# Latexmk configuration file.
+
+# Use XeLaTeX to compile.
+$pdf_mode = 5;
+
+# Process index.
+$makeindex = 'zhmakeindex -s gind.ist %O -o %D %S';
+
+# Show CPU time used.
+$show_time = 1;
+%</latexmk|latexmk-en>
+%<*latexmk>
+
+# Process glossary (change history).
+add_cus_dep('glo', 'gls', 0, 'makeglo2gls');
+sub makeglo2gls {
+    system("zhmakeindex -s gglo.ist -o \"$_[0].gls\"
+        -t \"$_[0].glg\" \"$_[0].glo\"");
+}
+%</latexmk>
+%    \end{macrocode}
+%
+% \clearpage
+%
+% \end{implementation}
+%
diff --git a/Master/texmf-dist/source/latex/fduthesis/fduthesis-logo.dtx b/Master/texmf-dist/source/latex/fduthesis/fduthesis-logo.dtx
new file mode 100644
index 00000000000..0b2ae76f1ee
--- /dev/null
+++ b/Master/texmf-dist/source/latex/fduthesis/fduthesis-logo.dtx
@@ -0,0 +1,2537 @@
+% \iffalse meta-comment
+%
+% Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either
+% version 1.3c of this license or (at your option) any later
+% version. The latest version of this license is in:
+%
+%   http://www.latex-project.org/lppl.txt
+%
+% and version 1.3 or later is part of all distributions of
+% LaTeX version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is Xiangdong Zeng.
+%
+% \fi
+%
+% \EnableImplementation
+%
+% \begin{implementation}
+%
+%^^A 代码部分的页边距
+% \newgeometry{
+%   left      = 2.25 in,
+%   right     = 1.00 in,
+%   top       = 1.25 in,
+%   bottom    = 1.00 in,
+%   marginpar = 2.25 in
+% }
+%
+% \subsection{视觉识别系统 \pkg{fdulogo}}
+%
+% \changes{v0.5}{2017/08/30}{将视觉识别系统移入 \pkg{fdulogo}
+%   宏包，并添加重修版校徽。}
+%
+% 本宏包附属于 \cls{fduthesis}，利用 \TikZ{} 宏包绘制复旦大学
+% 校名、校徽与校训，并提供标准色以供参考。
+%
+%    \begin{macrocode}
+%<@@=fdulogo>
+%<*logo>
+\RequirePackage { luatex85 }
+\RequirePackage { xcolor, tikz }
+\RequirePackage { xparse }
+%    \end{macrocode}
+%
+% \subsubsection{用户接口}
+%
+% \begin{macro}{\fduname}
+% 复旦大学校名（復旦大學），由毛泽东题写。原始图片来源：
+% \url{http://www.fudan.edu.cn/2016/channels/view/74/}。
+%    \begin{macrocode}
+\NewDocumentCommand \fduname { O { } }
+  {
+    \@@_tikz:Nx \fdulogo@name
+      { \l_@@_default_arg_tl, #1 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fduemblem}
+% 复旦大学校徽。第一个可选参数（加号）用于选择是否使用重修版本
+% 的图案，第二个（星号）用于选择是否选用阴文图案。原始图片来源：
+% \url{http://www.fudan.edu.cn/2016/channels/view/74/}。
+% 重修版本的核心图案来自江湾永久校址奠基石（来源：
+% \url{http://www.fda.fudan.edu.cn/zphc/list.htm}），字体使用
+% FreeSerif Bold。
+%    \begin{macrocode}
+\NewDocumentCommand \fduemblem { t+ s O { } }
+  {
+    \@@_tikz:cx
+      {
+        \IfBooleanTF {#1}
+          {
+            \IfBooleanTF {#2}
+              { fdulogo@emblem@new@reversed } { fdulogo@emblem@new }
+          }
+          {
+            \IfBooleanTF {#2}
+              { fdulogo@emblem@reversed } { fdulogo@emblem }
+          }
+      }
+      { \l_@@_default_arg_tl, #3 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdumotto}
+% 复旦大学校训：博學而篤志，切問而近思（简体：博学而笃志，
+% 切问而近思），由马相伯题写。原始图片来源：
+% \url{http://www.fudan.edu.cn/2016/channels/view/74/}。
+%    \begin{macrocode}
+\NewDocumentCommand \fdumotto { O { } }
+  {
+    \@@_tikz:Nx \fdulogo@motto
+      { \l_@@_default_arg_tl, #1 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_default_arg_tl}
+% 默认参数。
+%    \begin{macrocode}
+\tl_const:Nn \l_@@_default_arg_tl { x = 1 pt, y = 1 pt }
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_tikz:Nn,\@@_tikz:Nx,\@@_tikz:cx}
+% 对 \env{tikzpicture} 环境的封装。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_tikz:Nn #1#2
+  {
+    \begin{tikzpicture} [#2]
+      #1
+    \end{tikzpicture}
+  }
+\cs_generate_variant:Nn \@@_tikz:Nn { Nx, cx }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{FudanBlue,FudanRed}
+% 标准色（复旦蓝、复旦红）。
+%    \begin{macrocode}
+\definecolor { FudanBlue } { HTML } { 0E419C }
+\definecolor { FudanRed  } { HTML } { C80000 }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{MaterialGrey}
+% Google Material 颜色系列。
+%    \begin{macrocode}
+\definecolor { MaterialGrey } { HTML } { 9E9E9E }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{内部命令}
+%
+%    \begin{macrocode}
+%<@@=>
+\ExplSyntaxOff
+%    \end{macrocode}
+%
+% \begin{macro}[int]{\fdulogo@name}
+% 校名。
+%    \begin{macrocode}
+\def\fdulogo@name{%
+  \fill \fdulogo@name@fu
+        \fdulogo@name@dan
+        \fdulogo@name@da
+        \fdulogo@name@xue;}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\fdulogo@emblem,
+%   \fdulogo@emblem@reversed,
+%   \fdulogo@emblem@text,
+%   \fdulogo@emblem@year}
+% 校徽。
+%    \begin{macrocode}
+\def\fdulogo@emblem{%
+  \fill \fdulogo@emblem@kernel
+        \fdulogo@emblem@text
+        \fdulogo@emblem@year
+        \fdulogo@emblem@ring@inner@i
+        \fdulogo@emblem@ring@inner@ii
+        \fdulogo@emblem@ring@outer@i
+        \fdulogo@emblem@ring@outer@ii;}
+\def\fdulogo@emblem@reversed{%
+  \fill \fdulogo@emblem@text
+        \fdulogo@emblem@year;
+  \fill[even odd rule]
+        \fdulogo@emblem@kernel
+        \fdulogo@emblem@ring@inner@i
+        \fdulogo@emblem@ring@outer@i
+        \fdulogo@emblem@ring@outer@ii;}
+\def\fdulogo@emblem@text{%
+  \fdulogo@emblem@F
+  \fdulogo@emblem@U@i
+  \fdulogo@emblem@D
+  \fdulogo@emblem@A
+  \fdulogo@emblem@N@i
+  \fdulogo@emblem@U@ii
+  \fdulogo@emblem@N@ii
+  \fdulogo@emblem@I@i
+  \fdulogo@emblem@V
+  \fdulogo@emblem@E
+  \fdulogo@emblem@R
+  \fdulogo@emblem@S
+  \fdulogo@emblem@I@ii
+  \fdulogo@emblem@T
+  \fdulogo@emblem@Y}
+\def\fdulogo@emblem@year{%
+  \fdulogo@emblem@one
+  \fdulogo@emblem@nine
+  \fdulogo@emblem@zero
+  \fdulogo@emblem@five}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\fdulogo@emblem@new,
+%   \fdulogo@emblem@new@reversed,
+%   \fdulogo@emblem@new@text,
+%   \fdulogo@emblem@new@year}
+% 校徽（重修版）。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new{%
+  \fill \fdulogo@emblem@new@kernel
+        \fdulogo@emblem@new@text
+        \fdulogo@emblem@new@year;
+  \fill[even odd rule]
+        \fdulogo@emblem@new@ring@inner@i
+        \fdulogo@emblem@new@ring@inner@ii
+        \fdulogo@emblem@new@ring@outer@i
+        \fdulogo@emblem@new@ring@outer@ii;}
+\def\fdulogo@emblem@new@reversed{%
+  \fill \fdulogo@emblem@new@text
+        \fdulogo@emblem@new@year;
+  \fill[even odd rule]
+        \fdulogo@emblem@new@kernel
+        \fdulogo@emblem@new@ring@inner@i
+        \fdulogo@emblem@new@ring@outer@i
+        \fdulogo@emblem@new@ring@outer@ii;}
+\def\fdulogo@emblem@new@text{%
+  \fdulogo@emblem@new@F
+  \fdulogo@emblem@new@U@i
+  \fdulogo@emblem@new@D
+  \fdulogo@emblem@new@A
+  \fdulogo@emblem@new@N@i
+  \fdulogo@emblem@new@U@ii
+  \fdulogo@emblem@new@N@ii
+  \fdulogo@emblem@new@I@i
+  \fdulogo@emblem@new@V
+  \fdulogo@emblem@new@E
+  \fdulogo@emblem@new@R
+  \fdulogo@emblem@new@S
+  \fdulogo@emblem@new@I@ii
+  \fdulogo@emblem@new@T
+  \fdulogo@emblem@new@Y}
+\def\fdulogo@emblem@new@year{%
+  \fdulogo@emblem@new@one
+  \fdulogo@emblem@new@nine
+  \fdulogo@emblem@new@zero
+  \fdulogo@emblem@new@five}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\fdulogo@motto,
+%   \fdulogo@motto@i,
+%   \fdulogo@motto@ii}
+% 校训。
+%    \begin{macrocode}
+\def\fdulogo@motto{%
+  \fill \fdulogo@motto@i
+        \fdulogo@motto@ii;}
+\def\fdulogo@motto@i{%
+  \fdulogo@motto@bo
+  \fdulogo@motto@xue
+  \fdulogo@motto@er@i
+  \fdulogo@motto@du
+  \fdulogo@motto@zhi}
+\def\fdulogo@motto@ii{%
+  \fdulogo@motto@qie
+  \fdulogo@motto@wen
+  \fdulogo@motto@er@ii
+  \fdulogo@motto@jin
+  \fdulogo@motto@si}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\fduthesis@cover}
+% \cls{fduthesis} 用户手册的封面图案。内部使用。
+%    \begin{macrocode}
+\def\fduthesis@cover{%
+  \hspace{1.5cm}
+  \begin{tikzpicture}[x=1pt, y=1pt, scale=1.1, color=MaterialGrey]
+    \useasboundingbox ( 100, -140) rectangle ( 800,  800);
+    \fdulogo@emblem@new
+  \end{tikzpicture}
+  \begin{tikzpicture}[x=1pt, y=1pt]
+    \useasboundingbox ( 750, -150) rectangle (1350,  850);
+    \fill \fdulogo@motto@i;
+  \end{tikzpicture}
+  \begin{tikzpicture}[x=1pt, y=1pt]
+    \useasboundingbox (1280,   10) rectangle (1880, 1210);
+    \fill \fdulogo@motto@ii;
+  \end{tikzpicture}
+  \hspace*{-42.5cm}}
+%</logo>
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{生成文件}
+%
+% 以下两个文件用于生成各图案。
+% \DoNotIndex{\FIG,\BG}
+%    \begin{macrocode}
+%<*(ex-logo|cover)>
+%<ex-logo>\documentclass{article}
+%<cover>\documentclass{standalone}
+\usepackage{fdulogo}
+%<*ex-logo>
+\usetikzlibrary{backgrounds,external}
+\tikzexternalize[prefix=fudan-]
+\let\FIG=\tikzsetnextfilename
+\def\BG#1{color=white, show background rectangle,
+  background rectangle/.style={#1}}
+%</ex-logo>
+\begin{document}
+%    \end{macrocode}
+%
+% 校名。
+%    \begin{macrocode}
+%<*ex-logo>
+\FIG{name-black}                  \fduname
+\FIG{name-blue}                   \fduname[color=FudanBlue]
+\FIG{name-red}                    \fduname[color=FudanRed]
+%    \end{macrocode}
+%
+% 校徽。
+%    \begin{macrocode}
+\FIG{emblem-a-black}              \fduemblem
+\FIG{emblem-a-blue}               \fduemblem[color=FudanBlue]
+\FIG{emblem-a-red}                \fduemblem[color=FudanRed]
+\FIG{emblem-b-black}              \fduemblem*
+\FIG{emblem-b-blue}               \fduemblem*[color=FudanBlue]
+\FIG{emblem-b-red}                \fduemblem*[color=FudanRed]
+%    \end{macrocode}
+%
+% 校徽（重修版）。
+%    \begin{macrocode}
+\FIG{emblem-new-a-black}          \fduemblem+
+\FIG{emblem-new-a-blue}           \fduemblem+[color=FudanBlue]
+\FIG{emblem-new-a-red}            \fduemblem+[color=FudanRed]
+\FIG{emblem-new-b-black}          \fduemblem+*
+\FIG{emblem-new-b-blue}           \fduemblem+*[color=FudanBlue]
+\FIG{emblem-new-b-red}            \fduemblem+*[color=FudanRed]
+\FIG{emblem-new-a-reversed-black} \fduemblem+[\BG{fill}]
+\FIG{emblem-new-a-reversed-blue}  \fduemblem+[\BG{fill=FudanBlue}]
+\FIG{emblem-new-a-reversed-red}   \fduemblem+[\BG{fill=FudanRed}]
+\FIG{emblem-new-b-reversed-black} \fduemblem+*[\BG{fill}]
+\FIG{emblem-new-b-reversed-blue}  \fduemblem+*[\BG{fill=FudanBlue}]
+\FIG{emblem-new-b-reversed-red}   \fduemblem+*[\BG{fill=FudanRed}]
+%    \end{macrocode}
+%
+% 校训。
+%    \begin{macrocode}
+\FIG{motto}                       \fdumotto
+\FIG{motto-reversed}              \fdumotto[\BG{fill}]
+%</ex-logo>
+%    \end{macrocode}
+%
+% \cls{fduthesis} 封面。
+%    \begin{macrocode}
+%<*cover>
+\makeatletter
+\fduthesis@cover
+\makeatother
+%</cover>
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+\end{document}
+%</(ex-logo|cover)>
+%    \end{macrocode}
+%
+% \subsubsection{路径}
+%
+% 各图案的路径均使用 Bézier 曲线生成。曲线的具体数据参见源代码，
+% 此处从略。
+%
+% \clearpage
+%
+% \end{implementation}
+%
+% \DisableImplementation
+%
+% \begin{implementation}
+%
+% \paragraph{校名}
+%
+% 复。
+%    \begin{macrocode}
+%<*logo>
+\def\fdulogo@name@fu{%
+  ( 86.79426450, 309.23000203)
+    .. controls ( 90.52759774, 306.43000210) and ( 95.27426428, 304.13666883) .. ( 96.80759758, 299.37666895)
+    .. controls (100.07426416, 292.95000244) and (100.74093081, 285.69666929) .. (101.08759747, 278.60333613)
+    .. controls ( 97.58093089, 266.51000310) and ( 89.47426443, 256.63000335) .. ( 83.27426458, 245.87000362)
+    .. controls ( 76.79426475, 235.84333720) and ( 70.78093156, 225.51000413) .. ( 64.22093173, 215.53667104)
+    .. controls ( 62.24759844, 212.88333778) and ( 62.18093178, 209.48333786) .. ( 61.44759846, 206.37667127)
+    .. controls ( 66.44759834, 207.63000457) and ( 71.00759822, 205.08333797) .. ( 75.68759811, 203.80333800)
+    .. controls ( 77.31426473, 200.65667142) and ( 78.78093136, 197.41667150) .. ( 80.55426465, 194.33667157)
+    .. controls ( 80.19426466, 188.60333838) and ( 77.71426472, 183.32333852) .. ( 74.72759813, 178.52333864)
+    .. controls ( 68.70093162, 167.31000558) and ( 62.86093176, 155.99000587) .. ( 56.75426525, 144.81667281)
+    .. controls ( 54.87426529, 140.92333958) and ( 54.19426531, 136.60333968) .. ( 52.91426534, 132.51000645)
+    .. controls ( 54.60759863, 129.12333987) and ( 56.99426524, 126.08333995) .. ( 58.50093187, 122.61667337)
+    .. controls ( 59.66093184, 116.97667351) and ( 61.08759847, 111.27000698) .. ( 60.52759849, 105.45667380)
+    .. controls ( 59.15426519,  78.25667448) and ( 58.22093188,  51.01667516) .. ( 56.68759858,  23.83000917)
+    .. controls ( 54.52759864,  19.44334261) and ( 53.56759866,  12.80334278) .. ( 47.75426547,  12.03000946)
+    .. controls ( 42.10093228,  14.51000940) and ( 39.03426569,  20.09667593) .. ( 37.23426574,  25.71000912)
+    .. controls ( 36.24759909,  37.23000883) and ( 41.36759897,  48.00334190) .. ( 42.15426561,  59.35000828)
+    .. controls ( 43.31426558,  69.33667470) and ( 41.59426563,  79.37667445) .. ( 41.47426563,  89.39000753)
+    .. controls ( 41.72759896,  92.87000744) and ( 39.83426567,  95.81667404) .. ( 38.20759904,  98.71000730)
+    .. controls ( 36.59426575,  98.21667398) and ( 34.98093246,  97.73667399) .. ( 33.35426583,  97.24334067)
+    .. controls ( 28.54093262,  89.83000752) and ( 23.40759941,  82.63000770) .. ( 18.54093287,  75.25667455)
+    .. controls ( 16.62093292,  75.76334120) and ( 14.67426630,  76.15000786) .. ( 12.80759968,  76.81667451)
+    .. controls ( 12.07426636,  78.93667446) and ( 11.02093306,  81.43000773) .. ( 12.54093302,  83.45667435)
+    .. controls ( 20.94093281,  99.43000728) and ( 29.63426593, 115.23000688) .. ( 38.19426571, 131.11000649)
+    .. controls ( 42.94093226, 140.45667292) and ( 48.59426545, 149.36333936) .. ( 52.68759868, 159.00333912)
+    .. controls ( 55.28759862, 168.04333890) and ( 60.40759849, 176.51000535) .. ( 59.79426517, 186.20333844)
+    .. controls ( 54.76759863, 185.93667178) and ( 51.83426537, 181.23000523) .. ( 47.56759881, 179.16333862)
+    .. controls ( 44.71426555, 181.43000523) and ( 41.87426562, 183.71000517) .. ( 39.04759902, 186.01667178)
+    .. controls ( 40.84759898, 191.27000498) and ( 41.78093229, 196.92333818) .. ( 44.86093221, 201.65667139)
+    .. controls ( 52.82093201, 215.04333772) and ( 60.74093181, 228.45667072) .. ( 68.78093161, 241.80333705)
+    .. controls ( 74.71426480, 252.79000345) and ( 83.66093124, 262.99000319) .. ( 83.84759790, 276.12333620)
+    .. controls ( 83.06093126, 284.17666933) and ( 81.95426462, 292.19000246) .. ( 81.08759797, 300.24333559)
+    .. controls ( 82.94093126, 303.27000218) and ( 84.82093121, 306.28333544) .. ( 86.79426450, 309.23000203)
+  (143.71426307,  60.96334157)
+    .. controls (144.87426304,  59.85667494) and (146.06092968,  58.77667496) .. (147.26092965,  57.72334166)
+    .. controls (149.38092960,  57.35000833) and (151.54092954,  57.99000832) .. (153.66092949,  58.11000831)
+    .. controls (154.46092947,  59.65667494) and (155.27426278,  61.20334157) .. (156.08759610,  62.75000820)
+    .. controls (152.87426284,  64.45667482) and (149.39426293,  65.55000813) .. (145.88759635,  66.47000810)
+    .. controls (145.16759637,  64.64334148) and (144.43426306,  62.80334153) .. (143.71426307,  60.96334157)
+  (144.91426304, 141.67000622)
+    .. controls (143.54092974, 139.96333960) and (143.79426307, 137.71000632) .. (143.52759641, 135.67000637)
+    .. controls (146.12759635, 135.72333971) and (148.42092962, 137.09667300) .. (150.07426291, 139.03000629)
+    .. controls (154.63426280, 143.33667285) and (153.22092950, 150.21667268) .. (154.36759614, 155.79000587)
+    .. controls (151.31426288, 151.01667266) and (148.14092963, 146.32333944) .. (144.91426304, 141.67000622)
+  (139.83426317, 253.56333676)
+    .. controls (153.16759617, 263.92333650) and (166.98092916, 273.65666959) .. (180.19426216, 284.17666933)
+    .. controls (184.74092871, 283.19000269) and (188.98092861, 281.07000274) .. (192.24759519, 277.71000282)
+    .. controls (182.23426211, 263.05666986) and (165.90092919, 254.75000340) .. (153.84759615, 242.09667038)
+    .. controls (146.96759633, 233.00333727) and (139.40759651, 224.41667082) .. (132.67426335, 215.21667105)
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+%    \end{macrocode}
+%
+% 旦。
+%    \begin{macrocode}
+\def\fdulogo@name@dan{%
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+%    \end{macrocode}
+%
+% 大。
+%    \begin{macrocode}
+\def\fdulogo@name@da{%
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+%    \end{macrocode}
+%
+% 学。
+%    \begin{macrocode}
+\def\fdulogo@name@xue{%
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+%    \end{macrocode}
+%
+% \paragraph{校徽}
+%
+% 核心图案。
+%    \begin{macrocode}
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+%    \end{macrocode}
+%
+% 文字“FUDAN UNIVERSITY”。
+%    \begin{macrocode}
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+    .. controls (698.06571588, 299.28613032) and (694.90571596, 290.91279720) .. (692.13238270, 282.73946407)
+    .. controls (691.75904937, 281.24613077) and (690.83904940, 280.21946413) .. (689.37238277, 279.64613081)
+    .. controls (686.74571616, 280.49946413) and (685.17238287, 282.87279740) .. (683.39904958, 284.80613069)
+    .. controls (673.79904982, 282.88613073) and (664.23905006, 280.71279745) .. (654.85238363, 277.89946419)
+    .. controls (662.07905011, 271.45946435) and (667.39904998, 262.52613124) .. (676.59904975, 258.60613134)
+    .. controls (678.67904970, 257.53946470) and (681.47904963, 257.63279803) .. (683.17238292, 255.99279807)
+    .. controls (684.90571621, 248.51279826) and (682.79904960, 238.67279851) .. (674.89238313, 235.51279858)
+    .. controls (669.46571660, 249.71279823) and (655.46571695, 257.24613137) .. (646.86571716, 269.09946441)
+    .. controls (641.23905064, 276.16613090) and (631.89238420, 278.01946419) .. (623.53238441, 279.72613081)
+    .. controls (617.95905122, 280.92613078) and (613.19905134, 272.47279766) .. (607.85238480, 276.92613088)
+    .. controls (608.41238479, 285.40613067) and (611.27905138, 293.47279714) .. (613.22571800, 301.68613026)
+    .. controls (613.77238466, 304.49946353) and (615.46571795, 306.80613014) .. (617.57238456, 308.67279676)}
+%    \end{macrocode}
+%
+% 年份“1905”。
+%    \begin{macrocode}
+\def\fdulogo@emblem@one{%
+  (210.6390614,174.63280011)
+    .. controls (216.67906125, 175.21946676) and (221.81239445, 178.87280000) .. (227.55906098, 180.56613329)
+    .. controls (232.15906086, 177.80613336) and (236.70572742, 174.56613344) .. (239.37239402, 169.75280023)
+    .. controls (238.14572738, 166.88613363) and (236.77239408, 164.03280037) .. (234.83906080, 161.55280043)
+    .. controls (221.77239446, 143.96613421) and (209.17239477, 126.04613465) .. (196.18572843, 108.40613510)
+    .. controls (194.77239513, 106.56613514) and (193.47906183, 104.56613519) .. (191.71906187, 103.00613523)
+    .. controls (187.97239530, 101.52613527) and (184.55906205, 104.48613519) .. (181.98572878, 106.81946847)
+    .. controls (179.35906218, 109.25946841) and (175.50572895, 112.13946834) .. (177.26572890, 116.21946823)
+    .. controls (185.81239535, 129.96613456) and (196.33239509, 142.37946758) .. (204.86572821, 156.15280057)
+    .. controls (200.26572833, 159.91280047) and (195.41239511, 163.57946705) .. (191.87906187, 168.41946693)
+    .. controls (191.99906187, 173.07280015) and (195.02572846, 177.91280002) .. (199.63906168, 179.32613332)
+    .. controls (203.25239492, 177.65946670) and (206.67906150, 175.33946676) .. (210.63906140, 174.63280011)}
+\def\fdulogo@emblem@nine{%
+  (293.61239266, 125.28613467)
+    .. controls (287.66572614, 121.88613476) and (283.09239292, 113.28613497) .. (287.54572614, 106.99280180)
+    .. controls (291.95905937, 100.09946864) and (301.35905913,  98.67280201) .. (308.67905895, 100.99280195)
+    .. controls (313.38572550, 103.20613523) and (316.67905875, 108.65946842) .. (315.75905877, 113.87280163)
+    .. controls (314.18572548, 118.32613485) and (309.63905893, 120.55280146) .. (305.89239235, 122.89946807)
+    .. controls (302.19905911, 124.79280135) and (297.74572589, 127.05946796) .. (293.61239266, 125.28613467)
+  (283.21239292, 137.61946770)
+    .. controls (289.81239275, 139.92613431) and (297.09239257, 139.31280099) .. (303.86572574, 138.12613435)
+    .. controls (314.97239213, 136.04613440) and (326.23905851, 129.27280124) .. (330.05239175, 118.11280152)
+    .. controls (332.94572501, 105.13946851) and (328.85239178,  92.08613550) .. (324.65239188,  79.88613581)
+    .. controls (321.90572529,  69.68613606) and (312.95905884,  62.39280291) .. (303.49239241,  58.59280301)
+    .. controls (296.41239259,  55.49946975) and (288.41239279,  57.07280305) .. (281.25239297,  59.04613633)
+    .. controls (270.17239325,  62.33946958) and (260.70572682,  71.61946935) .. (258.78572686,  83.21946906)
+    .. controls (258.14572688,  88.32613560) and (261.02572681,  92.88613548) .. (265.11906004,  95.67280208)
+    .. controls (271.74572654,  93.39280214) and (272.38572652,  85.77946899) .. (275.58572644,  80.55280246)
+    .. controls (281.01239297,  73.16613598) and (292.19905936,  70.15280272) .. (300.31905916,  74.83280260)
+    .. controls (303.61239241,  76.65946922) and (306.47905900,  80.12613580) .. (306.43905901,  84.04613570)
+    .. controls (296.22572593,  85.09946901) and (285.02572621,  86.75280230) .. (277.26572640,  94.09946879)
+    .. controls (271.26572655, 100.64613529) and (266.10572668, 110.17946838) .. (269.73239326, 119.12613483)
+    .. controls (272.42572652, 126.23280132) and (275.69239311, 134.44613444) .. (283.21239292, 137.61946770)}
+\def\fdulogo@emblem@zero{%
+  (411.01238972, 111.88613501)
+    .. controls (404.38572322, 109.99280172) and (402.09238995, 102.60613524) .. (401.35905663,  96.49946873)
+    .. controls (400.65238998,  86.93946897) and (400.89238998,  76.60613589) .. (406.01238985,  68.15280277)
+    .. controls (408.30572313,  64.69946952) and (411.50572305,  61.23280294) .. (415.78572294,  60.48613629)
+    .. controls (424.71905605,  58.92613633) and (433.35905583,  66.55280281) .. (434.53238914,  75.23280259)
+    .. controls (435.43905578,  84.84613568) and (432.83905585,  94.45946878) .. (429.02572261, 103.20613523)
+    .. controls (425.89238935, 109.53946840) and (418.07905621, 114.51280161) .. (411.01238972, 111.88613501)
+  (405.74572319, 127.83280128)
+    .. controls (415.94572293, 129.47280124) and (427.99905597, 129.88613456) .. (436.03905577, 122.24613475)
+    .. controls (447.95905547, 108.76613509) and (453.13238867,  90.09946889) .. (451.81238870,  72.33946933)
+    .. controls (450.19905541,  58.21946968) and (438.79905570,  43.93947004) .. (423.73238941,  43.91280337)
+    .. controls (411.93238970,  44.16613670) and (398.71905670,  47.67280328) .. (391.73239021,  57.95280302)
+    .. controls (384.51905705,  68.47280276) and (383.82572374,  81.67280243) .. (382.77239043,  93.95280212)
+    .. controls (382.50572377, 108.28613510) and (390.71905690, 124.67280136) .. (405.74572319, 127.83280128)}
+\def\fdulogo@emblem@five{%
+  (521.86572029, 172.09946684)
+    .. controls (529.15905344, 177.17946671) and (539.82571984, 165.40613367) .. (533.55905333, 158.84613383)
+    .. controls (531.37238672, 156.05946724) and (528.26572013, 154.12613395) .. (525.10572021, 152.59280066)
+    .. controls (518.22572038, 149.35280074) and (511.30572055, 146.17946748) .. (504.49238739, 142.79280090)
+    .. controls (505.89238735, 138.48613434) and (507.39905398, 134.20613445) .. (509.29238727, 130.08613455)
+    .. controls (513.69238716, 132.57946782) and (518.31905371, 134.84613443) .. (521.93238695, 138.48613434)
+    .. controls (531.25238672, 148.75280075) and (549.73238626, 147.07280080) .. (557.66571939, 135.93946774)
+    .. controls (564.54571922, 127.15280129) and (566.22571918, 114.91280160) .. (563.05238592, 104.33946853)
+    .. controls (560.75905265,  96.36613540) and (554.18571948,  90.75280220) .. (547.63905298,  86.16613565)
+    .. controls (536.71905325,  79.13946916) and (521.10572031,  79.37946915) .. (511.09238722,  87.96613561)
+    .. controls (506.94572066,  92.15280217) and (511.54572054,  97.87280203) .. (515.22572045, 100.51280196)
+    .. controls (522.31905361, 102.40613525) and (528.73238678,  95.71280208) .. (535.89238660,  98.12613535)
+    .. controls (541.66571979, 101.15280194) and (546.25238634, 106.04613515) .. (549.17238627, 111.84613501)
+    .. controls (550.74571956, 119.79280148) and (545.49238636, 128.76613459) .. (537.27905323, 130.08613455)
+    .. controls (532.50572002, 130.93946787) and (529.15905344, 126.76613464) .. (525.82572019, 124.11280137)
+    .. controls (519.34572035, 118.00613486) and (511.38572055, 113.83280163) .. (503.55905408, 109.76613506)
+    .. controls (496.57238759, 123.39280139) and (487.81238780, 136.40613440) .. (484.21238789, 151.49946735)
+    .. controls (496.54572092, 158.76613384) and (509.27905393, 165.29946701) .. (521.86572029, 172.09946684)}
+%    \end{macrocode}
+%
+% 内环。
+%    \begin{macrocode}
+\def\fdulogo@emblem@ring@inner@i{%
+  (361.25239097, 616.49945573)
+    .. controls (394.65239013, 618.07278902) and (428.63905595, 615.12612243) .. (460.33238849, 603.93945604)
+    .. controls (533.42572000, 578.20612335) and (592.38571852, 515.31279159) .. (612.77238468, 440.47279346)
+    .. controls (618.50571787, 421.04612728) and (619.83905117, 400.69946112) .. (620.91905114, 380.57946162)
+    .. controls (621.31905113, 350.97946236) and (617.47905123, 321.11279644) .. (607.53238481, 293.12613048)
+    .. controls (581.78571879, 222.35279891) and (521.59905363, 164.84613368) .. (449.29238877, 143.36613422)
+    .. controls (411.30572305, 132.47280116) and (370.74572406, 131.20613453) .. (331.93239170, 138.13946769)
+    .. controls (299.90572584, 143.89946754) and (269.06572661, 156.40613390) .. (242.41239394, 175.12613343)
+    .. controls (198.49239504, 205.71279933) and (163.47906258, 250.28613155) .. (147.89239630, 301.81946359)
+    .. controls (138.98572986, 331.20612953) and (135.87906327, 362.25946208) .. (138.06572988, 392.84612798)
+    .. controls (139.77239651, 425.36612717) and (148.53239629, 457.45945970) .. (163.30572925, 486.47279231)
+    .. controls (189.25239527, 536.12612440) and (232.15906086, 577.09945671) .. (283.82572624, 599.16612283)
+    .. controls (308.26572563, 609.68612256) and (334.66572497, 615.49945575) .. (361.25239097, 616.49945573)}
+\def\fdulogo@emblem@ring@inner@ii{%
+  (349.85239125, 596.91278955)
+    .. controls (326.69239183, 594.15278962) and (303.94572573, 587.73945645) .. (282.86572626, 577.75279003)
+    .. controls (223.78572774, 548.76612409) and (176.71906225, 493.71279213) .. (161.78572929, 429.11279374)
+    .. controls (149.99906292, 378.21946168) and (154.90572946, 323.12612973) .. (178.09239555, 276.07279757)
+    .. controls (192.53239519, 247.36613162) and (213.46572800, 222.12613225) .. (238.09239405, 201.59279943)
+    .. controls (263.25239342, 180.57946662) and (293.22572600, 165.37946700) .. (325.15905854, 157.91280052)
+    .. controls (375.03905729, 145.87280083) and (429.05238927, 150.95280070) .. (475.53238811, 172.84613348)
+    .. controls (499.71905417, 184.55279986) and (521.54572029, 200.91279945) .. (540.18571983, 220.23279897)
+    .. controls (557.53238606, 238.29946518) and (572.49238569, 258.88613133) .. (582.82571876, 281.77946409)
+    .. controls (605.98571818, 332.51279616) and (608.94571811, 391.84612801) .. (592.09238520, 444.89946002)
+    .. controls (582.54571877, 475.56612592) and (565.71905252, 503.83279188) .. (543.55905308, 527.05945796)
+    .. controls (521.82572029, 550.60612404) and (495.25238762, 569.84612356) .. (465.65238836, 582.24612325)
+    .. controls (449.98572208, 588.81945642) and (433.39905583, 592.84612298) .. (416.79905625, 596.25945623)
+    .. controls (394.66572347, 599.43278949) and (372.03905737, 599.48612282) .. (349.85239125, 596.91278955)}
+%    \end{macrocode}
+%
+% 外环。
+%    \begin{macrocode}
+\def\fdulogo@emblem@ring@outer@i{%
+  (368.57239079, 736.61945272)
+    -- (390.89239023, 736.61945272)
+    .. controls (400.37238999, 735.31278609) and (409.98572308, 735.60611942) .. (419.45238951, 734.27278612)
+    .. controls (471.66572154, 729.01945291) and (522.85238693, 712.13945334) .. (567.25238582, 684.00612071)
+    .. controls (616.45238459, 652.68612149) and (658.38571687, 609.85945589) .. (688.45238279, 559.87279048)
+    .. controls (704.79904905, 532.39279116) and (717.45238206, 502.64612524) .. (725.18571520, 471.59279268)
+    .. controls (732.34571502, 444.25946003) and (735.50571495, 416.08612740) .. (737.17238157, 387.93946144)
+    -- (737.17238157, 364.21946203)
+    .. controls (736.39904826, 358.60612884) and (736.11904826, 352.95279565) .. (735.83904827, 347.29946246)
+    .. controls (731.38571505, 289.00613058) and (713.05238217, 231.36613202) .. (680.23904966, 182.75279990)
+    .. controls (638.58571737, 120.48613479) and (578.70571887,  69.67280273) .. (508.59905395,  42.48613674)
+    .. controls (471.46572155,  28.04613710) and (431.73238921,  21.32613727) .. (392.06572353,  19.28613732)
+    -- (362.01239095,  19.28613732)
+    .. controls (301.01239247,  21.79280393) and (240.03906067,  38.79280350) .. (188.59906195,  72.15280267)
+    .. controls (137.71906322, 104.44613519) and ( 94.53239764, 148.89946742) .. ( 64.27906506, 201.05946611)
+    .. controls ( 39.81239900, 242.93946507) and ( 25.45239936, 290.41946388) .. ( 20.70573282, 338.60612934)
+    .. controls ( 16.61239958, 377.51279503) and ( 19.02573286, 416.99279405) .. ( 26.67906600, 455.32612642)
+    .. controls ( 38.51906570, 513.71279163) and ( 66.61239833, 568.51279026) .. (106.13239735, 612.99278915)
+    .. controls (125.09239687, 634.91278860) and (146.65239633, 654.56612144) .. (170.07906241, 671.60612102)
+    .. controls (218.11906121, 706.80612014) and (275.75905977, 728.24611960) .. (334.91905829, 734.28611945)
+    .. controls (346.09239135, 735.72611941) and (357.37239107, 735.51278608) .. (368.57239079, 736.61945272)}
+\def\fdulogo@emblem@ring@outer@ii{%
+  (354.53239114, 717.84611986)
+    .. controls (321.10572531, 715.17945326) and (287.69239281, 709.16612008) .. (256.34572692, 696.99278705)
+    .. controls (208.13239480, 678.63278751) and (164.83906255, 648.37945493) .. (129.51906343, 610.92612253)
+    .. controls (106.35906401, 586.08612315) and ( 86.22573118, 558.24612385) .. ( 71.11906489, 527.77945794)
+    .. controls ( 36.07906576, 456.27279307) and ( 28.85239928, 372.71279515) .. ( 46.18573218, 295.37946375)
+    .. controls ( 61.50573180, 225.76613216) and (102.38573077, 163.29946706) .. (155.91906277, 116.89946822)
+    .. controls (196.98572841,  80.45946913) and (247.34572715,  54.51280311) .. (301.01239247,  42.79280340)
+    .. controls (383.25239042,  25.40613717) and (472.61238818,  34.95280360) .. (546.25238634,  76.84613588)
+    .. controls (609.82571809, 113.67280163) and (662.57238344, 169.83280023) .. (692.95904934, 236.93946522)
+    .. controls (715.01238212, 285.51279733) and (723.18571525, 339.56612932) .. (721.19904864, 392.63279466)
+    .. controls (718.73238203, 452.08612650) and (701.41238246, 511.41945835) .. (668.46571662, 561.23279044)
+    .. controls (631.46571755, 617.03278905) and (579.43905218, 663.59278788) .. (517.91905372, 690.64612054)
+    .. controls (466.78572166, 713.11278664) and (410.05238975, 721.16611978) .. (354.53239114, 717.84611986)}
+%    \end{macrocode}
+%
+% \paragraph{校徽（重修版）}
+%
+% 核心图案。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new@kernel{%
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+    .. controls (340.07825816, 389.64187394) and (342.01825812, 410.17787342) .. (336.41292492, 413.51120667)
+    .. controls (327.05025849, 419.07920653) and (273.18492650, 410.84454007) .. (263.01826009, 410.17787342)
+    .. controls (261.01826014, 399.01120704) and (271.06492656, 380.65520750) .. (284.68492622, 377.38587424)
+  (336.35159159, 441.01120599)
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+    .. controls (329.13025844, 475.43120513) and (323.68492524, 480.17253834) .. (299.01825919, 480.17253834)
+    .. controls (282.14492628, 480.17253834) and (267.18492665, 476.01120511) .. (261.31159347, 461.96720546)
+    .. controls (257.23692690, 452.22453904) and (258.30759354, 437.71253940) .. (262.91292676, 437.06587275)
+    .. controls (270.44892657, 436.00720611) and (336.35159159, 441.01120599) .. (336.35159159, 441.01120599)
+  (246.59292717, 497.03520459)
+    .. controls (259.37426018, 506.15653769) and (276.74092641, 512.23387087) .. (300.29559249, 512.23387087)
+    .. controls (348.32492463, 512.23387087) and (363.12892426, 484.62187156) .. (364.18492423, 471.84453855)
+    -- (364.78892421, 471.84453855)
+    .. controls (368.40759079, 488.78853813) and (395.43425678, 511.51120422) .. (399.44359001,521.76720397)
+    .. controls (400.91825664, 525.54053721) and (395.33292345, 527.64187049) .. (392.01825687,525.67787054)
+    .. controls (389.01825694, 523.90053725) and (372.68492402, 506.42853768) .. (360.51825765,506.42853768)
+    .. controls (354.64359113, 506.42853768) and (344.76892471, 511.67787089) .. (344.76892471,520.02320401)
+    .. controls (344.76892471, 527.51120382) and (366.72892417, 547.37253666) .. (375.35159062,559.84453635)
+    .. controls (381.31959047, 568.47653613) and (388.58492362, 581.05386915) .. (391.51825688,595.84453545)
+    .. controls (395.51825678, 616.01120161) and (404.51825655, 623.17786810) .. (415.85158960,623.17786810)
+    .. controls (424.46225606, 623.17786810) and (437.85158905, 613.67786834) .. (429.85158925,588.01120231)
+    .. controls (425.73692269, 574.80853597) and (419.22092285, 550.54453658) .. (430.35158924,549.51120327)
+    .. controls (446.51825550, 548.01120331) and (563.19691925, 564.04320291) .. (582.07425211,556.90053642)
+    .. controls (592.35158519, 553.01120319) and (602.68491827, 540.51120350) .. (592.74091851,526.23387052)
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+    .. controls (460.51812182, 422.32973979) and (462.43545511, 412.55774003) .. (469.51812160,412.41240670)
+  (453.04878867, 444.45907257)
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+    .. controls (600.58211832, 438.46307272) and (600.43145166, 419.22840653) .. (595.50211845,409.49107344)
+    .. controls (586.74078533, 392.17774054) and (506.59678734, 392.17774054) .. (466.18478835,392.17774054)
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+    .. controls (435.68478911, 423.84440642) and (435.60612244, 436.67773943) .. (453.04878867,444.45907257)}
+%    \end{macrocode}
+%
+% 文字“FUDAN UNIVERSITY”。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new@F{%
+  (128.08471915, 329.48133989)
+    -- (127.14177837, 332.01133349)
+    -- (105.95308200, 324.11420442)
+    -- (128.23005803, 264.34310569)
+    -- (130.86546803, 265.32533568)
+    .. controls (128.57617887, 272.75622407) and (129.41093008, 275.34847365) .. (134.89258287, 277.39151202)
+    -- (185.91412041, 296.40748451)
+    .. controls (191.39577320, 298.45052287) and (193.10540239, 297.40687447) .. (196.85613434, 289.92037447)
+    -- (199.49154434, 290.90260446)
+    -- (185.34743257, 328.85250841)
+    -- (182.71202258, 327.87027842)
+    .. controls (185.90496332, 318.01481284) and (185.34717211, 315.64584725) .. (179.54927011, 313.48494128)
+    -- (154.98724894, 304.33055784)
+    .. controls (151.19058341, 315.16160902) and (153.63728983, 320.51571619) .. (165.31554342, 326.54909292)
+    -- (164.33331344, 329.18450291)
+    -- (128.70257028, 315.90475353)
+    -- (129.68480027, 313.26934353)
+    .. controls (142.40947544, 315.85081706) and (147.47417141, 313.53636504) .. (151.40309135, 302.99472506)
+    -- (126.94648658, 293.87963081)
+    .. controls (123.04607978, 292.42593043) and (121.48115619, 293.40345164) .. (119.47740703, 298.77968803)
+    .. controls (111.81601315, 319.33588600) and (119.27761075, 323.79769475) .. (128.08471915, 329.48133989)}
+\def\fdulogo@emblem@new@U@i{%
+  (100.51870590, 377.96853391)
+    -- ( 97.71928261, 377.69763724)
+    -- (101.38180565, 339.84943428)
+    -- (104.18122894, 340.12033095)
+    .. controls (104.20655678, 348.03456725) and (105.53222649, 349.51915670) .. (113.59456558, 350.29933913)
+    -- (150.99486081, 353.91851870)
+    .. controls (161.96860013, 354.98043366) and (167.22791658, 357.86290671) .. (171.49391369, 365.17027770)
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+    .. controls (173.33273336, 408.07185888) and (159.86303178, 414.11507061) .. (142.84253814, 412.46801883)
+    -- (107.12189689, 409.01137727)
+    .. controls (100.51525791, 408.37206111) and ( 98.57192487, 409.76636429) .. ( 96.75866006, 416.82452926)
+    -- ( 93.95923677, 416.55363258)
+    -- ( 96.34312750, 391.91870758)
+    -- ( 99.14255080, 392.18960425)
+    .. controls ( 98.96921476, 400.98882014) and (100.99203606, 403.44507611) .. (109.16635208, 404.23609440)
+    -- (143.31931629, 407.54103383)
+    .. controls (159.89190220, 409.14474215) and (168.22511905, 403.62170878) .. (169.51458722, 390.29645390)
+    .. controls (170.61984565, 378.87480685) and (164.50082069, 373.19652877) .. (149.27195796, 371.72285086)
+    -- (111.87166273, 368.10367129)
+    .. controls (103.02548511, 367.24763780) and (101.68899846, 369.37881776) .. (100.51870590, 377.96853391)}
+\def\fdulogo@emblem@new@D{%
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+    -- (169.42470242, 420.67435842)
+    -- (176.13506745, 455.58527790)
+    .. controls (180.72189924, 479.44843805) and (168.53387923, 498.28768735) .. (145.66501742, 502.68340115)
+    .. controls (122.90663320, 507.05787961) and (106.12398751, 494.24543310) .. (101.21862573, 468.72510905)
+    -- ( 94.74184936, 435.02944310)
+    -- ( 97.50378919, 434.49855979)
+    .. controls ( 99.52571602, 441.44171376) and (101.58635124, 443.22225805) .. (106.66832053, 442.24543276)
+  (143.62723349, 483.14176993)
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+    .. controls (171.03670241, 449.92081412) and (169.32443437, 448.76066473) .. (164.35294268, 449.71625468)
+    -- (107.56745973, 460.63121552)
+    .. controls (105.02647508, 461.11962816) and (104.12545061, 463.58400402) .. (104.95362857, 467.89263016)
+    .. controls (106.86480848, 477.83561355) and (116.44974554, 488.36566169) .. (143.62723349, 483.14176993)}
+\def\fdulogo@emblem@new@A{%
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+    -- (130.11298094, 560.21376615)
+    -- (128.70046687, 557.39822066)
+    -- (172.60549553, 507.43004883)
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+    -- (189.66738124, 512.08605346)
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+    .. controls (191.36396463, 539.05076331) and (195.58931486, 538.44133613) .. (197.80152917, 537.33150365)
+    .. controls (199.91318828, 536.27211809) and (200.26293014, 534.46043123) .. (198.69839794, 530.84010551)
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+    -- (199.89964162, 526.20982516)
+    -- (216.24444735, 558.78970866)
+  (167.28995547, 520.41758644)
+    -- (147.59705438, 542.12837916)
+    -- (177.12710706, 540.02584966)}
+\def\fdulogo@emblem@new@N@i{%
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+    -- (165.65562172, 612.46005639)
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+    -- (216.28519850, 576.38902642)
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+    -- (235.66164284, 579.32502506)
+    -- (233.64932617, 581.28990174)
+    .. controls (226.87307200, 575.79932200) and (223.92900012, 575.84376027) .. (218.21402078, 581.42401004)
+    -- (185.85596873, 613.01922702)
+    -- (264.77597447, 606.24373256)
+    -- (266.97663635, 608.49752723)
+    -- (219.56645561, 654.79002177)
+    .. controls (214.97837360, 659.26994059) and (214.95370480, 661.33808113) .. (219.2574575, 667.35605515)
+    -- (217.24514083, 669.32093182)
+    -- (200.34720140, 652.01500846)
+    -- (202.35951807, 650.05013179)
+    .. controls (208.73900170, 655.45642366) and (211.92265398, 655.33528792) .. (217.63763332, 649.75503815)
+    -- (242.18789670, 625.78354268)}
+\def\fdulogo@emblem@new@U@ii{%
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+    -- (330.63705847, 727.22628423)
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+    -- (295.06243932, 713.50552261)
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+    -- (363.18801094, 724.16090836)
+    .. controls (361.26280166, 730.51307630) and (362.24800509, 732.69252743) .. (368.81218569, 735.85752868)
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+    -- (324.01145163, 711.46443764)
+    .. controls (321.43362903, 719.96988284) and (323.26059964, 721.69913479) .. (331.45282512, 724.53468765)}
+\def\fdulogo@emblem@new@N@ii{%
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+    -- (385.97745303, 738.12327211)
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+    -- (412.36130033, 665.30389623)
+    -- (412.31571034, 668.11602611)
+    .. controls (403.63793789, 668.98797568) and (401.57855597, 671.09236960) .. (401.44908038, 679.07881848)
+    -- (400.71599323, 724.29786706)
+    -- (451.98891394, 663.92106986)
+    -- (455.13849941, 663.97213066)
+    -- (454.06439908, 730.22591079)
+    .. controls (453.96045389, 736.63756693) and (455.39905463, 738.12358127) .. (462.69235634, 739.36696722)
+    -- (462.64676634, 742.17909711)
+    -- (438.46244932, 741.78702313)
+    -- (438.50803931, 738.97489325)
+    .. controls (446.84470898, 738.32244327) and (449.02022329, 735.99490256) .. (449.14969888, 728.00845368)
+    -- (449.70589684, 693.70046907)}
+\def\fdulogo@emblem@new@I@i{%
+  (476.71960763, 671.89702757)
+    .. controls (475.48868767, 666.40836111) and (473.16811016, 665.31466569) .. (464.76278168, 666.39263232)
+    -- (464.14732170, 663.64829909)
+    -- (502.56798690, 655.03185940)
+    -- (503.18344687, 657.77619262)
+    .. controls (494.96376586, 660.19605760) and (493.22273019, 662.20063379) .. (494.50288695, 667.90884691)
+    -- (506.41819213, 721.03913821)
+    .. controls (507.69834888, 726.74735132) and (510.39748318, 727.98673821) .. (518.59456473, 726.49429666)
+    -- (519.21002471, 729.23862989)
+    -- (480.78935952, 737.85506958)
+    -- (480.17389954, 735.11073636)
+    .. controls (487.95448724, 732.78934497) and (489.89045116, 730.62575865) .. (488.63491281, 725.02731887)}
+\def\fdulogo@emblem@new@V{%
+  (602.12727238, 694.33228933)
+    -- (580.41288862, 704.46574992)
+    -- (579.22351531, 701.91711333)
+    .. controls (586.22376857, 698.02956582) and (587.41992600, 696.60232359) .. (585.89752816, 693.34006875)
+    .. controls (585.13632925, 691.70894133) and (584.25959367, 690.62832056) .. (580.48079869, 687.05343948)
+    -- (551.88157206, 659.55539834)
+    -- (553.70312548, 700.17052387)
+    .. controls (553.90703363, 705.66199345) and (554.07015096, 707.07563874) .. (554.78377495, 708.60482070)
+    .. controls (555.87799839, 710.94956636) and (557.93050460, 711.35734248) .. (561.89958209, 709.75338598)
+    .. controls (562.40930941, 709.51551131) and (563.78217537, 708.99898266) .. (565.35893225, 708.38730413)
+    -- (566.54830556, 710.93594073)
+    -- (532.29462977, 726.92111800)
+    -- (531.10525646, 724.37248141)
+    .. controls (535.86950512, 721.28011654) and (536.40641483, 720.03637844) .. (536.33843014, 713.24000463)
+    -- (533.93908436, 639.99548921)
+    -- (536.69161188, 638.71096604)
+    -- (587.86166289, 687.70586863)
+    .. controls (593.25799982, 692.88468900) and (595.30371044, 693.54393098) .. (600.93789907, 691.78365274)}
+\def\fdulogo@emblem@new@E{%
+  (594.15792842, 607.98334063)
+    .. controls (588.62449694, 612.58998385) and (587.91748388, 615.08155932) .. (591.01257229, 618.79933359)
+    -- (608.43144194, 639.72262136)
+    .. controls (617.85556742, 631.87693213) and (618.59324875, 625.55386652) .. (611.28122633, 614.66077637)
+    -- (613.52918286, 612.78932756)
+    -- (637.85801734, 642.01276254)
+    -- (635.61006080, 643.88421134)
+    .. controls (626.25153717, 635.28038827) and (620.30284663, 634.81656760) .. (611.22456061, 642.37434163)
+    -- (610.87872115, 642.66225683)
+    -- (627.57780280, 662.72094592)
+    .. controls (630.31299721, 666.00642086) and (632.08478468, 665.84883526) .. (636.58069775, 662.10593765)
+    .. controls (650.67365604, 650.37339321) and (652.46291030, 643.90679653) .. (645.05122654, 630.60816424)
+    -- (647.21272321, 628.80869424)
+    -- (661.68046206, 646.18712746)
+    -- (611.79311892, 687.71889519)
+    -- (609.99364891, 685.55739852)
+    .. controls (615.67146452, 680.24502184) and (616.16254119, 677.49406677) .. (612.49162238, 673.08461356)
+    -- (577.65388307, 631.23803803)
+    .. controls (573.91098546, 626.74212496) and (571.90878052, 626.79876963) .. (564.93491997, 631.43352191)
+    -- (563.13544997, 629.27202524)
+    -- (613.71447204, 587.16442711)
+    -- (632.14445716, 602.26892739)
+    -- (629.72358089, 604.28433380)
+    .. controls (618.15969086, 598.83394993) and (607.81858737, 596.61069020) .. (594.15792842, 607.98334063)}
+\def\fdulogo@emblem@new@R{%
+  (703.67107461, 556.48625378)
+    .. controls (714.47632067, 563.60142604) and (714.27048109, 576.80121049) .. (702.94807655, 593.99564552)
+    -- (683.02559423, 624.25033449)
+    -- (680.67662770, 622.70355791)
+    .. controls (684.78529306, 615.44126165) and (684.24210802, 613.19777445) .. (677.47708440, 608.74305790)
+    -- (635.94735607, 581.39604802)
+    .. controls (629.08837379, 576.87946042) and (627.53007655, 577.20033640) .. (621.85850567, 583.97227242)
+    -- (619.50953914, 582.42549584)
+    -- (640.42195846, 550.66746829)
+    -- (642.77092499, 552.21424487)
+    .. controls (638.88456869, 560.16173109) and (639.29940333, 561.78189940) .. (645.97046829, 566.17474488)
+    -- (664.38636592, 578.30147324)
+    -- (666.05688463, 575.76458938)
+    -- (649.45513367, 536.94950373)
+    -- (662.13870160, 517.68797815)
+    -- (664.48766814, 519.23475473)
+    .. controls (663.37398900, 520.92601063) and (663.13341715, 522.51869961) .. (663.73616912, 524.26261004)
+    -- (678.07830393, 560.78155396)
+    .. controls (685.19134232, 555.09351361) and (693.42958052, 549.74230791) .. (703.67107461, 556.48625378)
+  (698.63980292, 593.58328528)
+    .. controls (704.33194073, 584.93908843) and (702.58094762, 578.80216225) .. (692.71528818, 572.30570063)
+    .. controls (681.25233149, 564.75743093) and (676.11916711, 567.43879411) .. (667.39304309, 580.28134726)
+    -- (691.35250174, 596.05846835)
+    .. controls (694.64105489, 598.22395555) and (696.72179997, 596.49600378) .. (698.63980292, 593.58328528)}
+\def\fdulogo@emblem@new@S{%
+  (743.20312975, 515.46936653)
+    .. controls (738.43076287, 530.00602567) and (727.28790107, 536.17566139) .. (713.82011393, 531.75420384)
+    .. controls (704.41404037, 528.66620174) and (699.50487531, 520.89733859) .. (697.58812596, 506.17757866)
+    -- (696.51882808, 497.89322644)
+    .. controls (695.11756780, 487.01333370) and (693.18068300, 483.53567665) .. (687.62254863, 481.71094814)
+    .. controls (680.24733186, 479.28967377) and (673.71795216, 482.94805456) .. (671.01595033, 491.17836892)
+    .. controls (665.64703758, 507.53211045) and (681.41553406, 517.20837331) .. (686.73126071, 520.49281728)
+    -- (685.71362365, 523.59254607)
+    -- (659.31248536, 514.92508563)
+    -- (660.33012242, 511.82535684)
+    .. controls (663.21284801, 512.06130697) and (664.45556027, 511.52202777) .. (665.01701519, 509.81183258)
+    .. controls (666.21010691, 506.17766779) and (664.11994318, 500.28153929) .. (667.38339994, 490.34102974)
+    .. controls (672.57685802, 474.52172420) and (685.17136327, 466.81573355) .. (698.63915042, 471.23719110)
+    .. controls (706.65569038, 473.86901107) and (713.05804743, 481.41764222) .. (714.23261811, 489.38133285)
+    -- (716.87701653, 507.65538929)
+    .. controls (718.31013894, 517.71688977) and (720.21031841, 520.94568148) .. (725.34090398, 522.63004626)
+    .. controls (731.96791036, 524.80568411) and (737.50344312, 521.64987718) .. (739.88962656, 514.38154761)
+    .. controls (742.55653747, 506.25812044) and (739.77220119, 496.34505570) .. (726.88804471, 487.26049550)
+    -- (727.87059083, 484.26765391)
+    -- (751.06511313, 491.88238636)
+    -- (750.01238514, 495.08900235)
+    .. controls (746.98768142, 494.92484849) and (745.85185636, 495.49921862) .. (745.25531050, 497.31630102)
+    .. controls (744.27276438, 500.30914260) and (746.11567718, 506.59772897) .. (743.20312975, 515.46936653)}
+\def\fdulogo@emblem@new@I@ii{%
+  (690.18650034, 451.64645084)
+    .. controls (684.60177379, 450.97454421) and (682.79616397, 452.79691191) .. (681.00644231, 461.07993480)
+    -- (678.21407904, 460.74398149)
+    -- (682.91742546, 421.65089566)
+    -- (685.70978873, 421.98684897)
+    .. controls (685.24696331, 430.54282399) and (686.55536222, 432.85315393) .. (692.36347783, 433.55193683)
+    -- (746.42363080, 440.05599302)
+    .. controls (752.23174641, 440.75477592) and (754.30105969, 438.62420089) .. (755.63056509, 430.39912000)
+    -- (758.42292837, 430.73507332)
+    -- (753.71958195, 469.82815914)
+    -- (750.92721867, 469.49220583)
+    .. controls (751.33629157, 461.38300894) and (749.94307439, 458.83585180) .. (744.24665331, 458.15050703)}
+\def\fdulogo@emblem@new@T{%
+  (695.27817006, 394.86431990)
+    .. controls (686.98727938, 395.61711698) and (685.86675195, 396.96144894) .. (685.95735078, 406.66801892)
+    -- (683.15637420, 406.92234225)
+    -- (679.52463696, 366.92439666)
+    -- (682.32561355, 366.67007332)
+    .. controls (683.88289314, 376.35643423) and (685.11518604, 377.48713459) .. (693.63015485, 376.71399165)
+    -- (752.67474121, 371.35285572)
+    .. controls (750.97531414, 357.61274267) and (745.29252469, 352.25466632) .. (731.78693629, 351.56058132)
+    -- (731.49192122, 348.31144849)
+    -- (754.03211881, 346.49076699)
+    -- (760.13587887, 413.71420497)
+    -- (737.64654595, 416.09508178)
+    -- (737.35153088, 412.84594895)
+    .. controls (750.51123954, 409.73070579) and (755.13604392, 403.43671956) .. (754.32275642, 389.50318398)}
+\def\fdulogo@emblem@new@Y{%
+  (727.37709643, 264.98714859)
+    -- (735.52753927, 288.35663423)
+    -- (732.87191590, 289.28282091)
+    .. controls (729.85861091, 282.35098762) and (728.37900448, 280.84154347) .. (725.29848138, 281.91592003)
+    .. controls (723.28020762, 282.61982191) and (720.08099945, 285.40363235) .. (716.65196381, 289.57820189)
+    -- (701.11261978, 308.22295111)
+    -- (730.20250072, 312.37493083)
+    .. controls (731.62538980, 312.35526096) and (735.02196252, 313.55357297) .. (737.35891108, 312.73852869)
+    .. controls (739.69585965, 311.92348440) and (739.98994711, 310.03373064) .. (738.47100095, 305.67850832)
+    -- (737.65103920, 302.98583749)
+    -- (740.30666256, 302.05965080)
+    -- (752.71756415, 337.64500393)
+    -- (750.06194078, 338.57119061)
+    .. controls (748.58987702, 335.03363777) and (745.60836911, 332.97569135) .. (741.25577198, 332.11080654)
+    -- (699.20940712, 324.97140268)
+    -- (683.59434172, 330.41738039)
+    .. controls (675.83992149, 333.12184551) and (675.07896935, 334.69784194) .. (677.26706220, 343.70466632)
+    -- (674.61143883, 344.63085301)
+    -- (661.75596764, 307.77080066)
+    -- (664.41159100, 306.84461398)
+    .. controls (668.29928281, 315.25867889) and (669.73200683, 315.95045356) .. (677.59265200, 313.20894097)
+    -- (697.13803998, 306.39220696)
+    -- (723.09792840, 274.58148207)
+    .. controls (725.02243735, 272.24224123) and (725.44996228, 269.71022039) .. (724.72147307, 265.91333528)}
+%    \end{macrocode}
+%
+% 年份“1905”。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new@one{%
+  (274.53952078, 192.6967679)
+    .. controls (276.90649749, 191.17738787) and (276.61091282, 188.42592116) .. (273.75447837, 183.97600496)
+    -- (250.35602597, 147.52456373)
+    .. controls (245.37245949, 139.76088014) and (242.44569971, 139.36684000) .. (233.01169676, 145.28890583)
+    -- (231.55309194, 143.01660820)
+    -- (267.05774249, 120.22590781)
+    -- (268.51634731, 122.49820545)
+    .. controls (260.02210251, 128.21810688) and (259.32418637, 130.67147132) .. (264.00387685, 137.96175957)
+    -- (298.64574144, 191.92882841)
+    -- (297.03619728, 192.96200682)
+    -- (266.55257519, 197.95733905)
+    -- (264.97241997, 195.49568328)
+    .. controls (266.79116106, 194.99667541) and (272.07786501, 194.27692313) .. (274.53952078, 192.6967679)}
+\def\fdulogo@emblem@new@nine{%
+  (346.53719503,  87.17026768)
+    .. controls (362.44194107,  86.72957443) and (370.45737301,  88.21059494) .. (380.22737659,  93.27206544)
+    .. controls (393.00061366,  99.87385110) and (401.02069729, 110.71391337) .. (403.43237633, 124.79726455)
+    .. controls (406.71757692, 143.98167207) and (398.66128891, 158.25957093) .. (383.13633486, 160.91811476)
+    .. controls (369.27476873, 163.29181460) and (357.41447084, 154.02251812) .. (354.81289581, 138.83024165)
+    .. controls (352.57212316, 125.74492323) and (359.14810987, 115.48728020) .. (371.23539553, 113.41741394)
+    .. controls (375.44931164, 112.69580918) and (378.42746538, 112.75654226) .. (381.68741805, 113.79631850)
+    .. controls (374.03262029,  97.75720684) and (363.55014714,  90.53485455) .. (347.03092460,  90.05347343)
+  (387.19655934, 133.96962358)
+    .. controls (386.68384018, 130.97552530) and (385.85438796, 127.46494357) .. (384.66717843, 122.53174856)
+    -- (383.84077127,1 19.70551161)
+    .. controls (383.52099316, 118.50468339) and (383.51185796, 116.45164907) .. (378.18901657, 117.36314981)
+    .. controls (371.31367978, 118.54050493) and (369.88353794, 125.51992491) .. (372.86490494, 142.93005197)
+    .. controls (375.06769840, 155.79358533) and (376.96809671, 158.89248601) .. (382.40183063, 157.96199567)
+    .. controls (387.61377949, 157.06948453) and (390.23489515, 151.71242822) .. (387.19655934, 133.96962358)}
+\def\fdulogo@emblem@new@zero{%
+  (468.53843186, 119.70741769)
+    .. controls (473.74690799,  97.12388612) and (487.76874274,  83.38513668) .. (502.34937235,  86.74789069)
+    .. controls (516.49148678,  90.00950924) and (523.24855517, 108.77145056) .. (518.16649836, 130.80683817)
+    .. controls (513.10972541, 152.73259697) and (498.65786882, 166.83401000) .. (484.51575438, 163.57239145)
+    .. controls (470.37363995, 160.31077290) and (463.58279437, 141.19466133) .. (468.53843186, 119.70741769)
+  (501.64142414,  89.81749692)
+    .. controls (496.15998444,  88.55330369) and (492.58528933,  94.54100910) .. (488.84327735, 110.76607062)
+    -- (483.05327233, 135.87106446)
+    .. controls (479.23540876, 152.42501236) and (479.85189169, 159.26387584) .. (485.11407380, 160.47750135)
+    .. controls (490.48588471, 161.71641072) and (494.24606002, 155.42510278) .. (497.96278832, 139.30967006)
+    -- (503.75279334, 114.20467623)
+    .. controls (507.94991488,  96.00629641) and (506.02657590,  90.82885151) .. (501.64142414,  89.81749692)}
+\def\fdulogo@emblem@new@five{%
+  (596.81323106, 144.25778675)
+    .. controls (593.53398643, 141.88060609) and (592.81646298, 137.88650017) .. (595.12761085, 134.69834567)
+    .. controls (598.62734904, 129.87056885) and (606.22172437, 130.51231652) .. (614.32874582, 136.38923538)
+    .. controls (629.35861705, 147.28464673) and (633.41288249, 164.11949675) .. (624.10225824, 176.96320489)
+    .. controls (617.23484744, 186.43657827) and (606.12245552, 189.49768961) .. (594.14661482, 185.12390882)
+    .. controls (589.95882917, 183.61665399) and (586.87090400, 181.93399782) .. (579.07134947, 176.97475918)
+    -- (575.72667581, 185.80578112)
+    -- (601.04973158, 204.16289844)
+    -- (596.58044201, 218.57075501)
+    -- (567.24942058, 197.30819466)
+    -- (581.19499276, 159.47691905)
+    .. controls (590.31078455, 165.11240378) and (594.44167660, 167.27320765) .. (599.37410141, 168.90338888)
+    .. controls (609.33004115, 172.22978413) and (617.92168735, 170.53738499) .. (622.27985189, 164.52543650)
+    .. controls (625.97768848, 159.42438929) and (624.87516584, 152.51098060) .. (619.77411864, 148.81314402)
+    .. controls (613.94435040, 144.58704507) and (603.28063019, 148.94611527) .. (596.81323106, 144.25778675)}
+%    \end{macrocode}
+%
+% 内环。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new@ring@inner@i{%
+  (427.28478932, 410.40467342) circle [radius=241.88932729]}
+\def\fdulogo@emblem@new@ring@inner@ii{%
+  (427.28478932, 410.40467342) circle [radius=226.77199428]}
+%    \end{macrocode}
+%
+% 外环。
+%    \begin{macrocode}
+\def\fdulogo@emblem@new@ring@outer@i{%
+  (427.28478932, 410.40467342) circle [radius=359.05469569]}
+\def\fdulogo@emblem@new@ring@outer@ii{%
+  (427.28478932, 410.40467342) circle [radius=343.93732473]}
+%    \end{macrocode}
+%
+% \paragraph{校训}
+%
+% 博。
+%    \begin{macrocode}
+\def\fdulogo@motto@bo{%
+  (446.44078884,  999.91565267)
+    .. controls (447.61812214, 1000.07431933) and (456.16345526, 1001.95698595) .. (459.29012185, 1001.31565264)
+    .. controls (462.45812177, 1000.66498599) and (466.03678835,  997.51565273) .. (466.58345500,  994.39565281)
+    .. controls (466.94345499,  992.40898619) and (463.75145507,  988.95165295) .. (461.25012180,  987.90231964)
+    .. controls (452.27412203,  984.13831973) and (442.91278893,  980.49831982) .. (442.91278893,  980.49831982)
+    .. controls (442.83012226,  967.45698682) and (443.36478892,  968.93832011) .. (444.83012221,  956.91298708)
+    .. controls (446.84478883,  940.36898749) and (445.10745554,  926.59832117) .. (444.86612221,  909.79965492)
+    .. controls (444.24612223,  900.95698848) and (440.71412232,  902.67165510) .. (438.57945570,  901.24898847)
+    .. controls (434.45412247,  898.49832187) and (433.83012249,  894.41565531) .. (429.68345592,  901.04098848)
+    .. controls (426.80745600,  905.63832169) and (420.49412282,  921.06898798) .. (424.47678939,  936.04898760)
+    .. controls (429.10745594,  953.47165383) and (434.23278914,  978.47565321) .. (433.49678916,  979.24898652)
+    .. controls (432.91545584,  979.85965317) and (422.17945611,  977.18765324) .. (413.71812299,  974.91565330)
+    .. controls (406.57945650,  972.99965334) and (404.51812322,  974.85431996) .. (404.16345656,  976.97165324)
+    .. controls (402.99678993,  983.91565307) and (425.50345603,  995.32898612) .. (429.25012260,  996.32898609)
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+%    \end{macrocode}
+%
+% 学。
+%    \begin{macrocode}
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+%
+% 而。
+%    \begin{macrocode}
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+%    \end{macrocode}
+%
+% 笃。
+%    \begin{macrocode}
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+%    \end{macrocode}
+%
+% 志。
+%    \begin{macrocode}
+\def\fdulogo@motto@zhi{%
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+%    \end{macrocode}
+%
+% 切。
+%    \begin{macrocode}
+\def\fdulogo@motto@qie{%
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+%    \end{macrocode}
+%
+% 问。
+%    \begin{macrocode}
+\def\fdulogo@motto@wen{%
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+%    \end{macrocode}
+%
+% 而。
+%    \begin{macrocode}
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+%    \end{macrocode}
+%
+% 近。
+%    \begin{macrocode}
+\def\fdulogo@motto@jin{%
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+%    \end{macrocode}
+%
+% 思。
+%    \begin{macrocode}
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+    .. controls (151.95492953,  157.78460706) and (139.55226318,  156.80460708) .. (128.66293012,  155.97127377)
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+    .. controls (140.16906316,   54.33167631) and (130.74639673,   62.99834276) .. (132.24106336,   65.39700937)
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+    .. controls (102.32373078,   54.78234297) and (100.67573082,   56.86634291) .. (100.89439748,   57.58234290)
+  (128.04773013,   74.22207581)
+    .. controls (126.84373016,   74.84474246) and (132.99706334,   84.33274223) .. (142.83039643,   90.16607542)
+    .. controls (150.18506291,   94.52874197) and (161.83039595,   99.36074185) .. (170.55172907,   99.36074185)
+    .. controls (176.49706225,   99.36074185) and (181.49706213,   96.74874192) .. (184.56239539,   93.83274199)
+    .. controls (187.18772865,   91.33540872) and (188.57306195,   88.19274213) .. (188.28106196,   83.24874225)
+    .. controls (187.99706197,   78.41540904) and (183.91306207,   75.57407578) .. (178.07572888,   75.45407578)
+    .. controls (163.99706257,   75.16607579) and (146.80906300,   79.21140902) .. (141.89306312,   79.04474236)
+    .. controls (135.37706328,   78.82340903) and (130.41306341,   72.99940918) .. (128.04773013,   74.22207581)}
+%</logo>
+%    \end{macrocode}
+%
+% \end{implementation}
+%
diff --git a/Master/texmf-dist/source/latex/fduthesis/fduthesis.dtx b/Master/texmf-dist/source/latex/fduthesis/fduthesis.dtx
new file mode 100644
index 00000000000..15e14f125fb
--- /dev/null
+++ b/Master/texmf-dist/source/latex/fduthesis/fduthesis.dtx
@@ -0,0 +1,6205 @@
+% \iffalse meta-comment
+% !TeX program  = XeLaTeX
+% !TeX encoding = UTF-8
+%
+% Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+%
+% This work may be distributed and/or modified under the
+% conditions of the LaTeX Project Public License, either
+% version 1.3c of this license or (at your option) any later
+% version. The latest version of this license is in:
+%
+%   http://www.latex-project.org/lppl.txt
+%
+% and version 1.3 or later is part of all distributions of
+% LaTeX version 2005/12/01 or later.
+%
+% This work has the LPPL maintenance status `maintained'.
+%
+% The Current Maintainer of this work is Xiangdong Zeng.
+%
+% This work consists of the files fduthesis.dtx,
+%                                 fduthesis-doc.dtx,
+%                                 fduthesis-logo.dtx,
+%                                 fduthesis-template.tex,
+%           and the derived files fduthesis.ins,
+%                                 fduthesis.cls,
+%                                 fduthesis-en.cls,
+%                                 fduthesis.def,
+%                                 fdudoc.cls,
+%                                 fdulogo.sty,
+%                                 fdulogo-example.tex,
+%                                 fduthesis-cover.tex,
+%                                 fduthesis-en.tex,
+%                                 fduthesis.pdf,
+%                                 fduthesis-en.pdf,
+%                                 fduthesis-code.pdf,
+%                                 latexmkrc,
+%                                 latexmkrc-en,
+%                             and README.md.
+%
+%<*internal>
+\iffalse
+%</internal>
+%
+%<*readme>
+The `fduthesis` Class
+=====================
+
+*LaTeX thesis template for Fudan University, v0.7a*
+
+Overview
+--------
+
+`fduthesis` is a thesis template for Fudan University. This template
+is mostly written in LaTeX3, with a simple interface for users.
+
+At present, only XeTeX, LuaTeX and [ApTeX](https://github.com/clerkma/ptex-ng)
+(experimental) are supported.
+
+The documentation can be found in
+[fduthesis.pdf](https://github.com/Stone-Zeng/fduthesis/releases/download/v0.7a/fduthesis.pdf)
+(in Chinese) or
+[fduthesis-en.pdf](https://github.com/Stone-Zeng/fduthesis/releases/download/v0.7a/fduthesis-en.pdf)
+(in English).
+
+Installation
+------------
+
+To install `fduthesis`, you can use one of the following methods:
+
+- Download
+  [fduthesis.tds.zip](https://github.com/Stone-Zeng/fduthesis/releases/download/v0.7a/fduthesis.tds.zip)
+  from GitHub, extract it in the root of one of your TDS trees, and
+  update the filename database.
+
+- Get the source (`fduthesis.zip`) from GitHub:
+
+      git clone https://github.com/Stone-Zeng/fduthesis.git
+
+  Run
+
+      xetex fduthesis.dtx
+
+  to generate the templates and configuration files. Then move the
+  following files into a directory where LaTeX will find them (e.g.
+  `TEXMF/tex/latex/fduthesis/`):
+
+  - `fduthesis.cls`
+  - `fduthesis-en.cls`
+  - `fduthesis.def`
+  - `fdudoc.cls`
+  - `fdulogo.sty`
+
+  Do not forget to update the filename database afterwards.
+
+Contributing
+------------
+
+[Issues](https://github.com/Stone-Zeng/fduthesis/issues) and
+[pull requests](https://github.com/Stone-Zeng/fduthesis/pulls)
+are always welcome.
+
+License
+-------
+
+This work may be distributed and/or modified under the conditions of
+the [LaTeX Project Public License](http://www.latex-project.org/lppl.txt),
+either version 1.3c of this license or (at your option) any later
+version.
+
+-----
+
+Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>.
+%</readme>
+%
+%<*internal>
+\fi
+\begingroup
+  \def\NameOfLaTeXe{LaTeX2e}
+\expandafter\endgroup\ifx\NameOfLaTeXe\fmtname\else
+\csname fi\endcsname
+%</internal>
+%
+%<*install>
+\input l3docstrip.tex
+\keepsilent
+\askforoverwritefalse
+
+\preamble
+
+    Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+
+    This work may be distributed and/or modified under the
+    conditions of the LaTeX Project Public License, either
+    version 1.3c of this license or (at your option) any later
+    version. The latest version of this license is in:
+
+      http://www.latex-project.org/lppl.txt
+
+    and version 1.3 or later is part of all distributions of
+    LaTeX version 2005/12/01 or later.
+
+    This work has the LPPL maintenance status `maintained'.
+
+    The Current Maintainer of this work is Xiangdong Zeng.
+
+    This work consists of the files fduthesis.dtx,
+                                    fduthesis-doc.dtx,
+                                    fduthesis-logo.dtx,
+                                    fduthesis-template.tex,
+              and the derived files fduthesis.ins,
+                                    fduthesis.cls,
+                                    fduthesis-en.cls,
+                                    fduthesis.def,
+                                    fdudoc.cls,
+                                    fdulogo.sty,
+                                    fdulogo-example.tex,
+                                    fduthesis-cover.tex,
+                                    fduthesis-en.tex,
+                                    fduthesis.pdf,
+                                    fduthesis-en.pdf,
+                                    fduthesis-code.pdf,
+                                    latexmkrc,
+                                    latexmkrc-en,
+                                and README.md.
+
+\endpreamble
+
+\generate{
+  \usedir{tex/latex/fduthesis}
+    \file{\jobname.cls}        {\from{\jobname.dtx}{class}}
+    \file{\jobname-en.cls}     {\from{\jobname.dtx}{class-en}}
+    \file{\jobname.def}        {\from{\jobname.dtx}{definition}}
+    \file{fdudoc.cls}          {\from{\jobname.dtx}{doc}
+                                \from{\jobname-doc.dtx}{doc}}
+    \file{fdulogo.sty}         {\from{\jobname.dtx}{logo}
+                                \from{\jobname-logo.dtx}{logo}}
+    \file{fdulogo-example.tex} {\from{\jobname.dtx}{ex-logo}
+                                \from{\jobname-logo.dtx}{ex-logo}}
+    \file{\jobname-cover.tex}  {\from{\jobname.dtx}{cover}
+                                \from{\jobname-logo.dtx}{cover}}
+%</install>
+%<*internal>
+  \usedir{source/latex/fduthesis}
+    \file{\jobname.ins}        {\from{\jobname.dtx}{install}}
+%</internal>
+%<*install>
+  \usedir{doc/latex/fduthesis}
+  \nopreamble\nopostamble
+    \file{README.md}           {\from{\jobname.dtx}{readme}}
+    % ``.cfg'' is only for internal/temporal use.
+    % They will be renamed by external scripts.
+    \file{latexmkrc.cfg}       {\from{\jobname-doc.dtx}{latexmk}}
+    \file{latexmkrc-en.cfg}    {\from{\jobname-doc.dtx}{latexmk-en}}
+}
+
+\obeyspaces
+\Msg{*************************************************************}
+\Msg{*                                                           *}
+\Msg{* To finish the installation you have to move the following *}
+\Msg{* files into a directory searched by TeX:                   *}
+\Msg{*                                                           *}
+\Msg{* The recommended directory is TDS:tex/latex/fduthesis      *}
+\Msg{*                                                           *}
+\Msg{*     fduthesis.cls                                         *}
+\Msg{*     fduthesis-en.cls                                      *}
+\Msg{*     fduthesis.def                                         *}
+\Msg{*     fdudoc.cls                                            *}
+\Msg{*     fdulogo.sty                                           *}
+\Msg{*                                                           *}
+\Msg{* To produce the documentation, run the file fduthesis.dtx  *}
+\Msg{* through XeLaTeX.                                          *}
+\Msg{*                                                           *}
+\Msg{* Happy TeXing!                                             *}
+\Msg{*                                                           *}
+\Msg{*************************************************************}
+
+\endbatchfile
+%</install>
+%
+%<*internal>
+\fi
+%</internal>
+%
+%<class|class-en|doc|logo>\NeedsTeXFormat{LaTeX2e}
+%<class|class-en|doc|logo>\RequirePackage{expl3}
+%<*!(driver|install|ex-logo|cover)>
+%<!readme>\GetIdInfo $Id: fduthesis.dtx 0.7a 2018-04-09 12:00:00Z Xiangdong Zeng <xdzeng96@gmail.com> $
+%<class>  {Thesis template for Fudan University}
+%<class>\ProvidesExplClass{\ExplFileName}
+%<class-en>  {Thesis template for Fudan University (English version)}
+%<class-en>\ProvidesExplClass{\ExplFileName-en}
+%<definition>  {Definition file for fduthesis}
+%<definition>\ProvidesExplFile{\ExplFileName.def}
+%<doc>  {Documentation class for fduthesis}
+%<doc>\ProvidesExplClass{fdudoc}
+%<logo>  {Fudan University's Visual Identity}
+%<logo>\ProvidesExplPackage{fdulogo}
+%<!readme>  {\ExplFileDate}{\ExplFileVersion}{\ExplFileDescription}
+%</!(driver|install|ex-logo|cover)>
+%<*driver>
+%\PassOptionsToPackage{showframe}{geometry}
+\documentclass{fdudoc}
+\usepackage{xpinyin}
+\hypersetup
+  {
+    pdftitle  = {fduthesis: 复旦大学论文模板},
+    pdfauthor = {曾祥东}
+  }
+\renewcommand*\expstar{\hyperlink{expstar}{$\mfrake$}}
+\renewcommand*\rexpstar{\hyperlink{rexpstar}{$\mfrakc$}}
+% 全角标点放在引号中，需要改成半角式，否则间距过大，不好看
+\newcommand\FSID{“{\xeCJKsetup{PunctStyle=banjiao}。}”} ^^A U+3002
+\newcommand\FSFW{“{\xeCJKsetup{PunctStyle=banjiao}．}”} ^^A U+FF0E
+\newcommand\COFW{“{\xeCJKsetup{PunctStyle=banjiao}：}”} ^^A U+FF1A
+\newcommand\SCFW{“{\xeCJKsetup{PunctStyle=banjiao}；}”} ^^A U+FF1B
+\begin{document}
+  \DisableImplementation
+%<!--CODEDOC-->  \EnableImplementation
+%<!--CODEDOC-->  \def\FDUCODEDOC{}
+  \DocInput{fduthesis.dtx}
+%<!--CODEDOC-->  \DocInput{fduthesis-doc.dtx,fduthesis-logo.dtx}
+  \IndexLayout
+  \PrintChanges
+  \PrintIndex
+\end{document}
+%</driver>
+% \fi
+%
+% \changes{v0.1}{2017/02/15}{开始编写模板。}
+% \changes{v0.2}{2017/02/19}{使用 Git 进行版本控制，并发布至 GitHub。}
+% \changes{v0.3}{2017/02/21}{使用 \cls{doc} 和 \pkg{DocStrip}。}
+% \changes{v0.3}{2017/03/04}{支持 \LuaLaTeX{}。}
+% \changes{v0.3}{2017/03/20}{添加测试文件。}
+% \changes{v0.3}{2017/05/26}{使用 Travis CI 进行持续集成。}
+% \changes{v0.3}{2017/06/23}{添加复旦大学视觉识别系统。}
+% \changes{v0.3}{2017/07/05}{新增声明页。}
+% \changes{v0.3}{2017/07/10}{添加英文模板。}
+% \changes{v0.3}{2017/07/19}{使用 \pkg{l3docstrip} 管理名字空间。}
+% \changes{v0.3}{2017/07/28}{整理代码，编写用户文档。}
+% \changes{v0.4}{2017/08/03}{拆分 \file{dtx} 文件。}
+% \changes{v0.4}{2017/08/11}{添加错误信息提示。}
+% \changes{v0.6}{2017/11/23}{同步 \pkg{ctex} v2.4.11。}
+% \changes{v0.6}{2017/11/29}{添加英文版用户文档。}
+% \changes{v0.7}{2018/01/26}{使用 \pkg{l3build} 进行回归测试。}
+% \changes{v0.7}{2018/01/31}{不再需要 \file{fduthesis-user.def}。}
+% \changes{v0.7}{2018/03/04}{所有选项更改为用连字符隔开的形式。}
+% \changes{v0.7a}{2018/04/09}{更新文档，发布至 CTAN。}
+%
+% \CheckSum{0}
+%
+% \CharacterTable
+%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
+%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
+%   Digits        \0\1\2\3\4\5\6\7\8\9
+%   Exclamation   \!     Double quote  \"     Hash (number) \#
+%   Dollar        \$     Percent       \%     Ampersand     \&
+%   Acute accent  \'     Left paren    \(     Right paren   \)
+%   Asterisk      \*     Plus          \+     Comma         \,
+%   Minus         \-     Point         \.     Solidus       \/
+%   Colon         \:     Semicolon     \;     Less than     \<
+%   Equals        \=     Greater than  \>     Question mark \?
+%   Commercial at \@     Left bracket  \[     Backslash     \\
+%   Right bracket \]     Circumflex    \^     Underscore    \_
+%   Grave accent  \`     Left brace    \{     Vertical bar  \|
+%   Right brace   \}     Tilde         \~}
+%
+%^^A! \PassOptionsToPackage{scheme=plain, linespread=1.1}{ctex}
+%^^A! \documentclass{fdudoc}
+%^^A! \hypersetup
+%^^A!   {
+%^^A!     pdftitle  = {fduthesis: LaTeX Thesis Template for Fudan University},
+%^^A!     pdfauthor = {Xiangdong Zeng}
+%^^A!   }
+%^^A! \ctexset
+%^^A!   {
+%^^A!     section = {name = {}, format+ = \raggedright},
+%^^A!     subsubsection/tocline = {\CTEXnumberline{#1}#2}
+%^^A!   }
+%^^A! \pagestyle{headings}
+%^^A! \renewcommand*\expstar{\hyperlink{expstar}{$\mfrake$}}
+%^^A! \renewcommand*\rexpstar{\hyperlink{rexpstar}{$\mfrakc$}}
+%^^A! \newcommand\FSID{{\xeCJKsetup{PunctStyle=banjiao}。}}
+%^^A! \newcommand\FSFW{{\xeCJKsetup{PunctStyle=banjiao}．}}
+%^^A! \IndexPrologue{\section{Index}}
+%^^A! \def\IndexLayout{%
+%^^A!   \setlength\IndexMin{0.5\textheight}%
+%^^A!   \ctexset{section/numbering=false}%
+%^^A!   \StopSpecialIndexModule}
+%^^A! \def\indexname{Index}
+%^^A! \let\usage\relax
+%^^A!
+%
+% \title{\textcolor{MaterialIndigo800}{^^A
+%   \textbf{fduthesis: 复旦大学论文^^A
+%     \xpinyin[font=\sffamily]{模}{mu2}板}}}
+% \author{曾祥东}
+% \date{\today \quad v0.7a^^A
+%   \thanks{\url{https://github.com/Stone-Zeng/fduthesis}.}}
+%^^A! \title{\textcolor{MaterialIndigo800}{%
+%^^A!   \textbf{The \textsf{fduthesis} Class \\
+%^^A!     \LaTeX{} Thesis Template for Fudan University}}}
+%^^A! \author{Xiangdong Zeng}
+%^^A! \date{\today \quad v0.7a%
+%^^A!   \thanks{\url{https://github.com/Stone-Zeng/fduthesis}.}}
+%^^A!
+%^^A! \begin{document}
+%^^A!
+%
+%^^A 禁止使用 " 符号作为抄录文本缩略符
+% \DeleteShortVerb\"
+%^^A! \DeleteShortVerb\"
+%^^A!
+%
+%^^A 封面与目录的页边距
+%^^A+
+% \newgeometry{
+%   left   = 1.25 in,
+%   right  = 1.25 in,
+%   top    = 1.25 in,
+%   bottom = 1.00 in
+% }
+%
+% \maketitle
+% \vfill
+% \begin{center}
+%   \includegraphics[width=8cm]{../logo/fduthesis-cover.pdf}
+% \end{center}
+% \vfill
+% \thispagestyle{plain}
+% \clearpage
+%
+% \tableofcontents
+%
+%^^A-
+%
+% \EnableDocumentation
+%^^A \DisableDocumentation
+%
+% \begin{documentation}
+%
+%^^A 用户手册的页边距
+%^^A+
+% \newgeometry{
+%   left   = 1.75 in,
+%   right  = 1.00 in,
+%   top    = 1.25 in,
+%   bottom = 1.00 in
+% }
+%
+%^^A-
+%
+% \section{介绍}
+%^^A! \section{Introduction}
+%^^A!
+%
+% 目前，在网上可以找到的复旦大学 \LaTeX{} 论文模板主要有以下这些：
+% \begin{itemize}
+%   \item 数学科学学院 2001 级的何力同学和李湛同学在 2005 年根据
+%     学校要求所设计的 \cls{毕业论文格式 tex04 版}，以及 2008 年
+%     张越同学修改之后的 \cls{毕业论文格式 tex08 版}，这是专为
+%     数院本科生撰写毕业论文而设计的
+%     \scite{数院毕业论文格式,数院毕业论文格式更新}；
+%   \item Pandoxie 编写的 \cls{FDU-Thesis-Latex}
+%     \scite{pandoxie2014fduthesislatex}，基本满足了博士（硕士）
+%     毕业论文格式要求，使用人数较多；
+%   \item richarddzh 编写的硕士论文模板 \cls{fudan-thesis}
+%     \scite{richard2016fudanthesis}；
+%   \item hmshan 编写的博士论文模板 \cls{FDU_PhD_Thesis_Template}
+%     \scite{hmshan2017fduphdthesistemplate}。
+% \end{itemize}
+% 以上这些模板大都没有经过系统的设计，也鲜有后续维护。相比之下，
+% 清华大学 \scite{thuthesis}、重庆大学 \scite{cquthesis}、
+% 中国科学技术大学 \scite{zepinglee2017ustcthesis} 以及友校
+% 上海交通大学 \scite{weijianwen2017sjtuthesis}等，都有成熟、
+% 稳定的解决方案，值得参考。
+%
+% 本模板将借鉴前辈经验，重新设计，并使用 \LaTeX3
+% \scite{interfaces3,source3} 编写，以适应 \TeX{} 技术发展潮流；
+% 同时还将构建一套简洁的接口，方便用户使用。
+%^^A! \cls{fduthesis} is a thesis template for Fudan University.
+%^^A! This template is mostly written in \LaTeX3 syntax, and
+%^^A! provides a simple interface for users.
+%^^A!
+%
+% \subsection*{\LaTeX{} 入门}
+%^^A! \subsection*{Getting started with \LaTeX{}}
+%^^A!
+%
+% 本文档并非是一份 \LaTeX{} 零基础教程。如果您是完完全全的新手，
+% 建议先阅读相关入门文档，如刘海洋编著的《\LaTeX{} 入门》
+% \scite{刘海洋2013latex入门} 第一章，或大名鼎鼎的“\pkg{lshort}”
+% \scite{lshort} 及其中文翻译版 \scite{lshort-zh-cn}。当然，
+% 网络上的入门教程多如牛毛，您可以自行选取。
+%^^A! This documentation is \emph{not} a \LaTeX{} tutorial at
+%^^A! starter's level. If you are totally a newbie, please read some
+%^^A! introductions like the famous \pkg{lshort}. Of course, there
+%^^A! are countless \LaTeX{} tutorials on the Internet. You can
+%^^A! choose whatever you like.
+%^^A!
+%
+% \subsection*{关于本文档}
+%^^A! \subsection*{About this documentation}
+%^^A!
+%
+% 本文采用不同字体表示不同内容。无衬线字体表示宏包名称，如
+% \pkg{xeCJK} 宏包、\cls{fduthesis} 文档类等；等宽字体表示代码或
+% 文件名，如 \cs{fdusetup} 命令、\env{abstract} 环境、\TeX{} 文档
+% \file{thesis.tex} 等；带有尖括号的楷体（或西文斜体）表示命令参数，
+% 如 \meta{模板选项}、\meta{English title} 等。在使用时，参数两侧
+% 的尖括号不必输入。示例代码进行了语法高亮处理，以方便阅读。
+%^^A! In this documentation, different typefaces are used to
+%^^A! represent different contents. Packages and classes are shown
+%^^A! in sans-serif font, e.g.\ \pkg{xeCJK} package and
+%^^A! \cls{fduthesis} class. Commands and file names are shown in
+%^^A! monospaced font, e.g.\ command \cs{fdusetup}, environment
+%^^A! \env{abstract} and \TeX{} document \file{thesis.tex}.
+%^^A! Italic-shaped font with angle brackets outside means arguments,
+%^^A! e.g.\ \meta{English title}. However, you do not need to type
+%^^A! the brackets when using these commands. The example code has
+%^^A! proper syntax highlighting so it will be much easier to read.
+%^^A!
+%
+% 在用户手册中，带有蓝色侧边线的为 \LaTeX{} 代码，而带有粉色侧边线
+% 的则为命令行代码，请注意区分。模板提供的选项、命令、环境等，
+% 均用横线框起，同时给出使用语法和相关说明。
+%^^A! \LaTeX{} code lines will have a blue line on their left, while
+%^^A! for command lines there will be a pink line. The options,
+%^^A! commands and environments in \cls{fduthesis} will be surrounded
+%^^A! by two horizontal lines. Their usages and descriptions are
+%^^A! provided at the same time.
+%^^A!
+%
+% 本模板中的选项、命令或环境可以分为以下三类：
+% \begin{itemize}
+%   \item 名字后面带有 \rexptarget\rexpstar{} 的，表示只能在^^A
+%     \emph{中文模板}中使用；
+%   \item 名字后面带有 \exptarget\expstar{} 的，表示只能在^^A
+%     \emph{英文模板}中使用；
+%   \item 名字后面不带有特殊符号的，表示既可以在中文模板中使用，
+%     也可以在英文模板中使用。
+% \end{itemize}
+%^^A! The options, commands and environments in \cls{fduthesis} can be
+%^^A! divided into the following three types:
+%^^A! \begin{itemize}
+%^^A!   \item Those can be only used in \emph{Chinese templates} are
+%^^A!     indicated by \rexptarget\rexpstar{}.
+%^^A!   \item Those can be only used in \emph{English templates} are
+%^^A!     indicated by \rexptarget\expstar{}.
+%^^A!   \item If they do not have special characters afterwards, then
+%^^A!     you can use them in both Chinese and English templates.
+%^^A! \end{itemize}
+%^^A!
+%
+% 代码实现主要面向对 \LaTeX{} 宏包开发感兴趣的用户。如果您有任何改进
+% 意见或者功能需求，欢迎前往 GitHub 仓库
+% \href{https://github.com/Stone-Zeng/fduthesis/issues}{提交 issue}。
+%^^A! If you want to read the implementation part, please turn to the
+%^^A! Chinese version. Any issues or feature requests can be submitted
+%^^A! in the \href{https://github.com/Stone-Zeng/fduthesis/issues}%
+%^^A! {GitHub repository}.
+%^^A!
+%
+% 文档的最后还提供了版本历史和代码索引，以供查阅。
+%
+% \section{安装}
+%^^A! \section{Installation}
+%^^A!
+%
+% \subsection{获取 \cls{fduthesis}}
+%^^A! \subsection{Obtaining \cls{fduthesis}}
+%^^A!
+%
+% \subsubsection{标准安装}
+%^^A! \subsubsection{Standard installation}
+%^^A!
+%
+% 如果没有特殊理由，始终建议您使用宏包管理器安装 \cls{fduthesis}。
+% 例如在 \TeXLive{} 中，执行（可能需要管理员权限）
+% \begin{shellexample}[morekeywords={tlmgr,install}]
+%   tlmgr install fduthesis
+% \end{shellexample}
+% 即可完成安装。
+%^^A! If there are no special reasons, it is always recommended to
+%^^A! install \cls{fduthesis} with a package manager. For example,
+%^^A! the following command will install the package in \TeXLive{}
+%^^A! (administrator permission may be required):
+%^^A! \begin{shellexample}[morekeywords={tlmgr,install}]
+%^^A!   tlmgr install fduthesis
+%^^A! \end{shellexample}
+%^^A!
+%
+% 在 \TeXLive{} 和 \MiKTeX{} 中，您还可以通过图形界面进行安装，
+% 此处不再赘述。
+%^^A! In \TeXLive{} and \MiKTeX{}, you can also install \cls{fduthesis}
+%^^A! through a graphical interface. It's rather simple and will not be
+%^^A! described here.
+%^^A!
+%
+% \subsubsection{手动安装}
+%^^A! \subsubsection{Install manually}
+%^^A!
+%
+% 如果您需要从 GitHub 上自行下载并手动安装，较好的方法是使用 TDS
+% 安装包：
+% \begin{itemize}
+%   \item 从 GitHub 上下载 \cls{fduthesis} 的
+%     \href{https://github.com/Stone-Zeng/fduthesis/releases/download/v0.7a/fduthesis.tds.zip}{TDS 安装包}；
+%   \item 按目录结构将 \file{fduthesis.tds.zip} 中的文件复制到 \TeX{}
+%     发行版的本地 TDS 根目录；
+%   \item 执行 \bashcmd{mktexlsr} 刷新文件名数据库以完成安装。
+% \end{itemize}
+%^^A! If you want to download the template from GitHub and install it
+%^^A! manually, the recommended way is to use the TDS ZIP file:
+%^^A! \begin{itemize}
+%^^A!   \item Download the \href{https://github.com/Stone-Zeng/fduthesis/releases/download/v0.7a/fduthesis.tds.zip}%
+%^^A!     {TDS ZIP file} for \cls{fduthesis};
+%^^A!   \item Copy all the files in \file{fduthesis.tds.zip} into the
+%^^A!     local TDS directory of \TeX{} distribution.
+%^^A!   \item Run \bashcmd{mktexlsr} to update the ls-R database.
+%^^A! \end{itemize}
+%^^A
+% 您也可以从源代码直接生成模板（不推荐）：
+% \begin{itemize}
+%   \item 打开 \href{https://github.com/Stone-Zeng/fduthesis}^^A
+%     {项目主页}，点击“Clone or download”，并选择“Download ZIP”，
+%     下载 \file{fduthesis-master.zip}；如果您的电脑中安装有 git
+%     程序，也可通过以下命令直接克隆代码仓库：
+%     \begin{shellexample}[gobble=7,alsoletter={.},^^A
+%         morekeywords={git,clone}]
+%       git clone https://github.com/Stone-Zeng/fduthesis.git
+%     \end{shellexample}
+%   \item 解压并进入到 \file{source} 文件夹，执行以下命令以生成
+%     模板的各组件：
+%     \begin{shellexample}[gobble=7,morekeywords={xetex}]
+%       xetex fduthesis.dtx
+%     \end{shellexample}
+%   \item 将生成的文档类（\file{.cls}）、宏包（\file{.sty}）以及
+%     参数配置文件（\file{.def}）复制到 \TeX{} 发行版本地 TDS 树
+%     的 \path{texmf-local/tex/latex/fduthesis/} 目录下，并执行
+%     \bashcmd{mktexlsr} 刷新文件名数据库，方可完成安装。
+% \end{itemize}
+%^^A! Although not recommended, you may generate the whole template
+%^^A! from source code as well:
+%^^A! \begin{itemize}
+%^^A!   \item Open the project's \href{https://github.com/Stone-Zeng/fduthesis}%
+%^^A!     {homepage}, click ``Clone or download'' and choose
+%^^A!     ``Download ZIP'' to download \file{fduthesis-master.zip}.
+%^^A!     If you have git program on your computer, you can also
+%^^A!     clone the repository directly:
+%^^A!     \begin{shellexample}[gobble=5,alsoletter={.},%
+%^^A!         morekeywords={git,clone}]
+%^^A!       git clone https://github.com/Stone-Zeng/fduthesis.git
+%^^A!     \end{shellexample}
+%^^A!   \item Extract files, and get into the \file{source} directory.
+%^^A!     Run the following command to generate all the components:
+%^^A!     \begin{shellexample}[gobble=5,morekeywords={xetex}]
+%^^A!       xetex fduthesis.dtx
+%^^A!     \end{shellexample}
+%^^A!   \item Copy the generated document classes (\file{.cls}),
+%^^A!     packages (\file{.sty}) and configuration files (\file{.def})
+%^^A!     into \path{texmf-local/tex/latex/fduthesis/} under the local
+%^^A!     TDS tree of \TeX{} distribution. Then run \bashcmd{mktexlsr}
+%^^A!     to update the ls-R database.
+%^^A! \end{itemize}
+%^^A!
+%
+% \subsubsection{扁平化安装}
+%^^A! \subsubsection{\cls{fduthesis} on the fly}
+%^^A!
+%
+% 如果您不希望安装本模板，但需要立刻使用，也可以使用模板提供的安装脚本。
+% 从 GitHub 上获取代码仓库后，执行 \file{install-win.bat}（Windows 系统）
+% 或 \file{install-linux.sh}（Linux 系统），所有需要的文件便会在
+% \file{thesis} 文件夹中生成。
+%^^A! If you don't want to install \cls{fduthesis} but need to use it
+%^^A! at once, you can try the installation scripts. Download the
+%^^A! repository from GitHub, run \file{install-win.bat} (on Windows)
+%^^A! or \file{install-linux.sh} (on Linux), then all the necessary
+%^^A! files will be found in the \file{thesis} folder.
+%^^A!
+%
+% \subsection{模板组成}
+%^^A! \subsection{Composition of the template}
+%^^A!
+%
+% 本模板主要包含核心文档类、配置文件、附属宏包以及用户文档等几个
+% 部分，其具体组成见表~\ref{tab:fduthesis-components}。
+%^^A! There are several parts in \cls{fduthesis}, including kernel
+%^^A! template classes, configuration files, affiliated packages and
+%^^A! user's guides. More details are listed in table~%
+%^^A! \ref{tab:fduthesis-components}.
+%^^A!
+%
+% \begin{table}[ht]
+%   \caption{\cls{fduthesis} 的主要组成部分}
+%   \label{tab:fduthesis-components}
+%   \centering
+%   \begin{tabular}{lp{24em}}
+%     \toprule
+%     \textbf{文件} & \textbf{功能说明} \\
+%     \midrule
+%     \file{fduthesis.cls}          & 中文模板文档类 \\
+%     \file{fduthesis-en.cls}       & 英文模板文档类 \\
+%     \file{fduthesis.def}          & 参数配置文件，用于设定
+%       \cls{fduthesis} 的初始参数，不建议您自行改动 \\
+%     \file{fdudoc.cls}             & 用户手册文档类 \\
+%     \file{fdulogo.sty}            & 复旦大学视觉识别系统 \\
+%     \file{README.md}              & 简要自述 \\
+%     \ifdefined\FDUCODEDOC
+%       \file{fduthesis.pdf}        & 中文用户手册 \\
+%       \file{fduthesis-en.pdf}     & 英文用户手册 \\
+%       \file{fduthesis-code.pdf}   & 模板实现代码（本文档） \\
+%     \else
+%       \file{fduthesis.pdf}        & 中文用户手册（本文档） \\
+%       \file{fduthesis-en.pdf}     & 英文用户手册 \\
+%       \file{fduthesis-code.pdf}   & 模板实现代码 \\
+%     \fi
+%     \file{fduthesis-template.tex} & 空白模板，可据此为基础完成论文
+%       撰写 \\
+%     \bottomrule
+%   \end{tabular}
+% \end{table}
+%^^A! \begin{table}[ht]
+%^^A!   \caption{The main components of \cls{fduthesis}}
+%^^A!   \label{tab:fduthesis-components}
+%^^A!   \centering
+%^^A!   \begin{tabular}{lp{24em}}
+%^^A!     \toprule
+%^^A!     \textbf{Files} & \textbf{Descriptions} \\
+%^^A!     \midrule
+%^^A!     \file{fduthesis.cls}          & Document class for Chinese thesis. \\
+%^^A!     \file{fduthesis-en.cls}       & Document class for English thesis.\\
+%^^A!     \file{fduthesis.def}          & Configuration parameters file
+%^^A!       for \cls{fduthesis}. Please do \emph{not} modify it. \\
+%^^A!     \file{fdudoc.cls}             & Document class for user guides. \\
+%^^A!     \file{fdulogo.sty}            & Fudan University's visual identity. \\
+%^^A!     \file{README.md}              & The brief introduction. \\
+%^^A!     \file{fduthesis.pdf}          & User's guide in Chinese. \\
+%^^A!     \file{fduthesis-en.pdf}       & User's guide in English (this
+%^^A!       document). \\
+%^^A!     \file{fduthesis-code.pdf}     & Code implementation. \\
+%^^A!     \file{fduthesis-template.tex} & An empty thesis template, and you can
+%^^A!       write your thesis based on it. \\
+%^^A!     \bottomrule
+%^^A!   \end{tabular}
+%^^A! \end{table}
+%^^A!
+%
+% 如需生成用户手册 \file{fduthesis.pdf}，可在命令行中执行
+% \begin{shellexample}[morekeywords={xelatex,makeindex},emph={-o,-s,-t}]
+%   xelatex fduthesis.dtx
+%   makeindex -s gind.ist -o fduthesis.ind fduthesis.idx
+%   makeindex -s gglo.ist -o fduthesis.gls -t fduthesis.glg fduthesis.glo
+%   xelatex fduthesis.dtx
+%   xelatex fduthesis.dtx
+% \end{shellexample}
+% 也可使用 \pkg{latexmk}：
+% \begin{shellexample}[morekeywords={latexmk}]
+%   latexmk fduthesis.dtx
+% \end{shellexample}
+% 本模板已经为编译用户手册提供了 \pkg{latexmk} 配置文件
+% \file{latexmkrc}。
+%
+% \section{使用说明}
+%^^A! \section{User's guide}
+%^^A!
+%
+% \subsection{基本用法}
+%^^A! \subsection{Getting started}
+%^^A!
+%
+% 以下是一份简单的 \TeX{} 文档，它演示了 \cls{fduthesis}
+% 的最基本用法：
+%^^A! Here is a minimal \TeX{} file for \cls{fduthesis}:
+%^^A+
+% \begin{latexexample}[deletetexcs={\documentclass},%
+%     moretexcs={\chapter},morekeywords={\documentclass},%
+%     emph={[2]document}]
+%   % thesis.tex
+%   \documentclass{fduthesis}
+%   \begin{document}
+%     \chapter{欢迎}
+%     \section{Welcome to fduthesis!}
+%     你好，\LaTeX{}！
+%   \end{document}
+% \end{latexexample}
+%^^A-
+%^^A!
+%
+% 按照 \ref{subsec:编译方式}~小节中的方式编译该文档，您应当得到
+% 一篇 5 页的文章。当然，这篇文章的绝大部分都是空白的。
+%^^A! Compile this file under the instructions in subsection~%
+%^^A! \ref{subsec:compilation}, you will get a 5-page article.
+%^^A! Of course, most of it will be blank, as you may predicate.
+%^^A!
+%
+% 英文模板可以用类似的方式使用：
+%^^A! The English version can be used in the same way:
+%^^A+
+% \begin{latexexample}[deletetexcs={\documentclass},%
+%     moretexcs={\chapter},morekeywords={\documentclass},%
+%     emph={[2]document}]
+%   % thesis-en.tex
+%   \documentclass{fduthesis-en}
+%   \begin{document}
+%     \chapter{Welcome}
+%     \section{Welcome to fduthesis!}
+%     Hello, \LaTeX{}!
+%   \end{document}
+% \end{latexexample}
+%^^A-
+% 英文模板只对正文部分进行了改动，封面、指导小组成员以及声明页仍将
+% 显示为中文。
+%^^A! The differences between English and Chinese version only
+%^^A! live in the main body. Thesis cover, instructors list and
+%^^A! declaration page are still printed in Chinese.
+%^^A!
+%
+% \subsection{编译方式} \label{subsec:编译方式}
+%^^A! \subsection{Compilation} \label{subsec:compilation}
+%^^A!
+%
+% 本模板不支持 \pdfTeX{} 引擎，请使用 \XeLaTeX{} 或 \LuaLaTeX{}
+% 编译。推荐使用 \XeLaTeX{}。为了生成正确的目录、脚注以及交叉引用，
+% 您至少需要连续编译两次。
+%^^A! \cls{fduthesis} does NOT support \pdfTeX{}. Please use
+%^^A! \XeLaTeX{} or \LuaLaTeX{} to compile, and \XeLaTeX{} is
+%^^A! recommended. To get the correct table of contents, footnotes
+%^^A! and cross-references, you need to compile the source file at
+%^^A! least twice.
+%^^A!
+%
+% 以下代码中，假设您的 \TeX{} 源文件名为 \file{thesis.tex}。
+% 使用 \XeLaTeX{} 编译论文，请在命令行中执行
+% \begin{shellexample}[morekeywords={xelatex}]
+%   xelatex thesis
+%   xelatex thesis
+% \end{shellexample}
+% 或使用 \pkg{latexmk}：
+% \begin{shellexample}[morekeywords={latexmk},emph={-xelatex}]
+%   latexmk -xelatex thesis
+% \end{shellexample}
+%^^A! In the following example, suppose your \TeX{} source file is
+%^^A! \file{thesis.tex}. Please execute the following commands if
+%^^A! you want to use \XeLaTeX{}:
+%^^A! \begin{shellexample}[morekeywords={xelatex}]
+%^^A!   xelatex thesis
+%^^A!   xelatex thesis
+%^^A! \end{shellexample}
+%^^A! You can use \pkg{latexmk} as well:
+%^^A! \begin{shellexample}[morekeywords={latexmk},emph={-xelatex}]
+%^^A!   latexmk -xelatex thesis
+%^^A! \end{shellexample}
+%^^A!
+%
+% 使用 \LuaLaTeX{} 编译论文，请在命令行中执行
+% \begin{shellexample}[morekeywords={lualatex}]
+%   lualatex thesis
+%   lualatex thesis
+% \end{shellexample}
+% 或者
+% \begin{shellexample}[morekeywords={latexmk},emph={-lualatex}]
+%   latexmk -lualatex thesis
+% \end{shellexample}
+%^^A! \LuaLaTeX{} can be used in a similar way:
+%^^A! \begin{shellexample}[morekeywords={lualatex}]
+%^^A!   lualatex thesis
+%^^A!   lualatex thesis
+%^^A! \end{shellexample}
+%^^A! or
+%^^A! \begin{shellexample}[morekeywords={latexmk},emph={-lualatex}]
+%^^A!   latexmk -lualatex thesis
+%^^A! \end{shellexample}
+%^^A!
+%
+% 需要注意，请不要把模板中的配置文件 \file{latexmkrc} 放置在工作
+% 文件夹下。该配置文件仅适用于生成模板用户手册。
+%^^A! Note that you should not put the profile \file{latexmkrc} in
+%^^A! your working directory. This file is meant to generate the
+%^^A! user's guide.
+%^^A!
+%
+% \subsection{模板选项}
+%^^A! \subsection{Options of the template}
+%^^A!
+%
+% 所谓“模板选项”，指需要在引入文档类的时候指定的选项：
+% \begin{latexexample}[deletetexcs={\documentclass},%
+%     morekeywords={\documentclass}]
+%   \documentclass(*\oarg{模板选项}*){fduthesis}
+%   \documentclass(*\oarg{模板选项}*){fduthesis-en}
+% \end{latexexample}
+%^^A! You can specify some \emph{template options} when loading
+%^^A! \cls{fduthesis}:
+%^^A! \begin{latexexample}[deletetexcs={\documentclass},%
+%^^A!     morekeywords={\documentclass}]
+%^^A!   \documentclass(*\oarg{options}*){fduthesis}
+%^^A!   \documentclass(*\oarg{options}*){fduthesis-en}
+%^^A! \end{latexexample}
+%^^A!
+%
+% 有些模板选项为布尔型，它们只能在 \opt{true} 和 \opt{false}
+% 中取值。对于这些选项，\kvopt{\meta{选项}}{true} 中的“|= true|”
+% 可以省略。
+%^^A! Some options are \emph{boolean} --- they only take the value
+%^^A! \opt{true} or \opt{false}. For these options, you can
+%^^A! abbreviate ``\kvopt{\meta{option}}{true}'' simply to
+%^^A! ``\opt{\meta{option}}''.
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2018-02-01]{type}
+%   \begin{fdusyntax}[emph={[1]type}]
+%     type = (*<doctor|master|(bachelor)>*)
+%   \end{fdusyntax}
+%^^A-
+%   选择论文类型。三种选项分别代表博士学位论文、硕士学位论文和本科
+%   毕业论文。
+% \end{function}
+%^^A!   Choose the type of your thesis. The three options represent
+%^^A!   doctoral dissertation, master degree thesis and undergraduate
+%^^A!   thesis, respectively.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{oneside,twoside}
+%   指明论文的单双面模式，默认为 \opt{twoside}。该选项会影响每章
+%   的开始位置，还会影响页眉样式。
+% \end{function}
+%^^A! \begin{function}{oneside,twoside}
+%^^A!   Specify whether single or double sided output should be
+%^^A!   generated. \opt{twoside} will be chosen by default. These
+%^^A!   option will determine where the new chapters begin and how
+%^^A!   the headers display. The option \opt{twoside} does
+%^^A!   \emph{not} tell the printer to actually make a two-sided
+%^^A!   printout.
+%^^A! \end{function}
+%^^A!
+%
+% 在双面模式（\opt{twoside}）下，按照通常的排版惯例，每章应只从
+% 奇数页（在右）开始；而在单页模式（\opt{oneside}）下，则可以从
+% 任意页面开始。本模板中，目录、摘要、符号表等均视作章，也按相同
+% 方式排版。
+%^^A! If choosing \opt{twoside}, chapters will begin at the odd pages
+%^^A! (right hand). However, they will begin at arbitrary pages
+%^^A! available when choosing \opt{oneside}. Table of contents,
+%^^A! abstract and the list of symbols are considered as chapters and
+%^^A! processed in the same way.
+%^^A!
+%
+% 双面模式下，正文部分偶数页（在左）的左页眉显示章标题，奇数页
+% （在右）的右页眉显示节标题；前置部分的页眉按同样格式显示，但文字
+% 均为对应标题（如“{\kaishu 目\textvisiblespace{}录}”、
+% “{\kaishu 摘\textvisiblespace{}要}”等）。
+% 而在单面模式下，正文部分则页面不分奇偶，均同时显示左、右页眉，
+% 文字分别为章标题和节标题；前置部分只有中间页眉，显示对应标题。
+%^^A! At two-sided mode, left headers on the even pages (left hand)
+%^^A! in \emph{main body} will show the title of chapters, while the
+%^^A! right headers on the odd pages (right hand) will show the
+%^^A! title of sections. Headers in \emph{front matter} have the
+%^^A! same style, but they will only show the title as
+%^^A! ``\textit{Contents}'', ``\textit{Abstract}'', etc.
+%^^A!
+%^^A! At one-sided mode, both left and right headers on \emph{all}
+%^^A! pages in main body will be shown. The text is the title of
+%^^A! chapters and sections, respectively. In front matter, there
+%^^A! are only middle headers, which show the corresponding titles.
+%^^A!
+%
+% \begin{function}{draft}
+%   \begin{fdusyntax}[emph={[1]draft}]
+%     draft = (*<\TFF>*)
+%   \end{fdusyntax}
+%   选择是否开启草稿模式，默认关闭。
+% \end{function}
+%^^A! \begin{function}{draft}
+%^^A!   \begin{fdusyntax}[emph={[1]draft}]
+%^^A!     draft = (*<\TFF>*)
+%^^A!   \end{fdusyntax}
+%^^A!   Enable draft mode. Default off.
+%^^A! \end{function}
+%^^A!
+%
+% 草稿模式为全局选项，会影响到很多宏包的工作方式。
+% 开启之后，主要的变化有：
+% \begin{itemize}
+%   \item 把行溢出的盒子显示为黑色方块；
+%   \item 不实际插入图片，只输出一个占位方框；
+%   \item 关闭超链接渲染，也不再生成 PDF 书签；
+%   \item 显示页面边框。
+% \end{itemize}
+%^^A! \opt{draft} is a global option and will affect many packages.
+%^^A! You may notice the following changes when using \opt{draft}:
+%^^A! \begin{itemize}
+%^^A!   \item Lines with overfull \tn{hbox}'s will be marked with
+%^^A!     a thick black square on the right margin.
+%^^A!   \item Will not include graphics files actually, but instead
+%^^A!     print a box of the size the graphic would take up, as well
+%^^A!     as the file name.
+%^^A!   \item Will not make hyperlinks and PDF bookmarks.
+%^^A!   \item Show the page frames.
+%^^A! \end{itemize}
+%^^A!
+%
+% \begin{function}[added=2018-01-31]{config}
+%   \begin{fdusyntax}[emph={[1]config}]
+%     config = (*\marg{文件}*)
+%   \end{fdusyntax}
+%   用户配置文件的文件名。默认为空，即不载入用户配置文件。
+% \end{function}
+%^^A! \begin{function}[added=2018-01-31]{config}
+%^^A!   \begin{fdusyntax}[emph={[1]config}]
+%^^A!     config = (*\marg{file}*)
+%^^A!   \end{fdusyntax}
+%^^A!   File name of user profile. Default value is empty, so no
+%^^A!   profile is loaded automatically.
+%^^A! \end{function}
+%^^A!
+%
+% \subsection{参数设置}
+%^^A! \subsection{More options}
+%^^A!
+%
+% \begin{function}{\fdusetup}
+%   \begin{fdusyntax}[morekeywords={\fdusetup}]
+%     \fdusetup(*\marg{键值列表}*)
+%   \end{fdusyntax}
+%   本模板提供了一系列选项，可由您自行配置。载入文档类之后，以下
+%   所有选项均可通过统一的命令 \cs{fdusetup} 来设置。
+% \end{function}
+%^^A! \begin{function}{\fdusetup}
+%^^A!   \begin{fdusyntax}[morekeywords={\fdusetup}]
+%^^A!     \fdusetup(*\marg{key-value list}*)
+%^^A!   \end{fdusyntax}
+%^^A!   \cls{fduthesis} has provided a number of options, which
+%^^A!   can be given via the general command \cs{fdusetup}.
+%^^A! \end{function}
+%^^A!
+%
+% \cs{fdusetup} 的参数是一组由（英文）逗号隔开的选项列表，列表中的
+% 选项通常是 \kvopt{\meta{key}}{\meta{value}} 的形式。部分选项的
+% \meta{value} 可以省略。对于同一项，后面的设置将会覆盖前面的设置。
+% 在下文的说明中，将用\textbf{粗体}表示默认值。
+%^^A! The argument of \cs{fdusetup} is a set of comma-separated option
+%^^A! list. The options usually have the form of \kvopt{\meta{key}}%
+%^^A! {\meta{value}} and in some cases \meta{value} can be omitted.
+%^^A! For the same option, the values given later will override the
+%^^A! the previous ones. Default values are indicated in
+%^^A! \textbf{boldface} in the following descriptions.
+%^^A!
+%
+% \cs{fdusetup} 采用 \LaTeX3 风格的键值设置，支持不同类型以及多种
+% 层次的选项设定。键值列表中，“|=|”左右的空格不影响设置；但需注意，
+% 参数列表中不可以出现空行。
+%^^A! \cs{fdusetup} follows \LaTeX3 key-value style, and different
+%^^A! types as well as various levels options are supported. In the
+%^^A! key-value list, spaces around ``|=|'' will be trimmed; however,
+%^^A! blank lines should never appear in the argument.
+%^^A!
+%
+% 与模板选项相同，布尔型的参数可以省略 \kvopt{\meta{选项}}{true}
+% 中的“|= true|”。
+%^^A! Similar with template options, ``\kvopt{\meta{option}}{true}''
+%^^A! can be abbreviated to \opt{\meta{option}} for boolean type.
+%^^A!
+%
+% 另有一些选项包含子选项，如 \opt{style} 和 \opt{info} 等。它们可以
+% 按如下两种等价方式来设定：
+%^^A! Some options, such as \opt{style} and \opt{info}, may have
+%^^A! sub-options. They can be set by the following two equivalent
+%^^A! methods:
+%^^A+
+% \begin{latexexample}[morekeywords={\fdusetup},%
+%     emph={[1]style,cjk-font,font-size,info,title,title*,author,author*,department}]
+%   \fdusetup{
+%     style = {cjk-font = adobe, font-size = -4},
+%     info  = {
+%       title      = {关于光产生和转变的一个启发性观点},
+%       title*     = {On a Heuristic Viewpoint Concerning the Production
+%         and Transformation of Light},
+%       author     = {阿尔伯特·爱因斯坦},
+%       author*    = {Albert Einstein},
+%       department = {物理学系}
+%     }
+%   }
+% \end{latexexample}
+%^^A-
+% 或者
+%^^A! or
+%^^A+
+% \begin{latexexample}[morekeywords={\fdusetup},%
+%     emph={[1]style,cjk-font,font-size,info,title,title*,author,author*,department}]
+%   \fdusetup{
+%     style/cjk-font  = adobe,
+%     style/font-size = -4,
+%     info/title      = {关于光产生和转变的一个启发性观点},
+%     info/title*     = {On a Heuristic Viewpoint Concerning the Production
+%       and Transformation of Light},
+%     info/author     = {阿尔伯特·爱因斯坦},
+%     info/author*    = {Albert Einstein},
+%     info/department = {物理学系}
+%   }
+% \end{latexexample}
+%^^A-
+%^^A!
+%
+% 注意 “|/|” 的前后均不可以出现空白字符。
+%^^A! Note that you may \emph{not} put spaces around ``|/|''.
+%^^A!
+%
+% \subsubsection{论文格式} \label{subsubsec:论文格式}
+%^^A! \subsubsection{Style and format} \label{subsubsec:style-and-format}
+%^^A!
+%
+% \begin{function}{style}
+%   \begin{fdusyntax}[emph={[1]style}]
+%     style = (*\marg{键值列表}*)
+%     style/(*\meta{key}*) = (*\meta{value}*)
+%   \end{fdusyntax}
+%   该选项包含许多子项目，用于设置论文格式。具体内容见下。
+% \end{function}
+%^^A! \begin{function}{style}
+%^^A!   \begin{fdusyntax}[emph={[1]style}]
+%^^A!     style = (*\marg{key-value list}*)
+%^^A!     style/(*\meta{key}*) = (*\meta{value}*)
+%^^A!   \end{fdusyntax}
+%^^A!   This general option is for setting the thesis style and format.
+%^^A!   See the following details.
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[updated=2017-09-23]{style/font}
+%   \begin{fdusyntax}[emph={[1]font}]
+%     font = (*<libertinus|lm|palatino|(times)|none>*)
+%   \end{fdusyntax}
+%^^A-
+%   设置西文字体（包括数学字体）。
+% \end{function}
+%^^A!   Set the western fonts (including math fonts).
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[rEXP,updated=2017-09-23]{style/cjk-font}
+%   \begin{fdusyntax}[emph={[1]cjk-font}]
+%     cjk-font = (*<adobe|(fandol)|founder|mac|windows|none>*)
+%   \end{fdusyntax}
+%^^A-
+%   设置中文字体。
+% \end{function}
+%^^A!   Set CJK (Chinese, Japanese and Korean) fonts.
+%^^A! \end{function}
+%^^A!
+%
+% 启用 \kvopt{font}{none} 或 \kvopt{cjk-font}{none} 之后，模板将关闭
+% 默认西文 / 中文字体设置。此时，您需要自行使用 \cs{setmainfont}、
+% \cs{setCJKmainfont}、\cs{setmathfont} 等命令来配置字体。
+%^^A! When you choose \kvopt{font}{none} or \kvopt{cjk-font}{none},
+%^^A! \cls{fduthesis} will disable the default western/CJK font
+%^^A! settings. You may use \cs{setmainfont}, \cs{setCJKmainfont}
+%^^A! and \cs{set\-math\-font}, etc.\ to configure the fonts manually.
+%^^A!
+%
+%^^A+
+% \begin{function}{style/font-size}
+%   \begin{fdusyntax}[emph={[1]font-size}]
+%     font-size = (*<(-4)|5>*)
+%   \end{fdusyntax}
+%^^A-
+%   设置论文的基础字号。
+% \end{function}
+%^^A!   Specify the basic font size in your thesis.
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[rEXP,updated=2017-10-14]{style/fullwidth-stop}
+%   \begin{fdusyntax}[emph={[1]fullwidth-stop}]
+%     fullwidth-stop = (*<catcode|mapping|(false)>*)
+%   \end{fdusyntax}
+%^^A-
+%   选择是否把全角实心句点\FSFW 作为默认的句号形状。
+%   这种句号一般用于科技类文章，以避免与下标“$_o$”或“$_0$”混淆。
+% \end{function}
+%^^A!   Let full-width full stop ``\FSFW'' as the default full stop.
+%^^A!   Generally, this punctuation is used for scientific articles,
+%^^A!   where ``\FSID'' is easily to be confused with subscript
+%^^A!   ``$_o$'' or ``$_0$''.
+%^^A! \end{function}
+%^^A!
+%
+% 选择 \kvopt{fullwidth-stop}{catcode} 或 \opt{mapping} 后，都会实现
+% 上述效果。有所不同的是，在选择 \opt{catcode} 后，只有^^A
+% \emph{显式的}\FSID 会被替换为\FSFW，但在选择 \opt{mapping} 后，
+% \emph{所有的}\FSID 都会被替换。例如，如果您用宏保存了一些含有^^A
+% \FSID 的文字，那么在选择 \opt{catcode} 时，其中的\FSID 不会被
+% 替换为\FSFW。
+%^^A! If you choose \kvopt{fullwidth-stop}{catcode}, only
+%^^A! \emph{explicit} ``\FSID'' will be replaced by ``\FSFW''; when
+%^^A! choosing \kvopt{fullwidth-stop}{mapping}, however, \emph{all}
+%^^A! the ``\FSID'' will be replaced.
+%^^A!
+%
+% 选项 \kvopt{fullwidth-stop}{mapping} 只在 \XeTeX{} 下有效。使用
+% \LuaTeX{} 编译时，该选项相当于 \kvopt{fullwidth-stop}{catcode}。
+%^^A! \opt{mapping} is valid only under \XeTeX{}. When compiling
+%^^A! with \LuaTeX{}, it is equivalent to \opt{catcode}.
+%^^A!
+%
+% 如果您在选择 \kvopt{fullwidth-stop}{mapping} 后仍需要临时显示^^A
+% \FSID，可以按如下方法操作：
+% \begin{latexexample}[moretexcs={\CJKfontspec},emph={[1]Mapping}]
+%   % 请使用 XeTeX 编译
+%   % 外侧的花括号表示分组
+%   这是一个句号{\CJKfontspec{(*\meta{字体名}*)}[Mapping=full-stop]。}
+% \end{latexexample}
+%^^A! If you want to display ``\FSID'' temporarily after setting
+%^^A! \kvopt{fullwidth-stop}{mapping}, the following code snippet
+%^^A! will be helpful:
+%^^A! \begin{latexexample}[moretexcs={\CJKfontspec},emph={[1]Mapping}]
+%^^A!   % Compiled with XeTeX
+%^^A!   % The outside braces is used for group
+%^^A!   这是一个句号{\CJKfontspec{(*\meta{font name}*)}[Mapping=full-stop]。}
+%^^A! \end{latexexample}
+%^^A!
+%
+% \begin{function}{style/footnote-style}
+%^^A 这里奇怪的东西是用来控制对齐的。fdusyntax 会吃掉开头的几个
+%^^A 空格，因此这里用 X 来占位。
+%   \begin{fdusyntax}[emph={[1]footnote-style}]
+%     footnote-style = (*<plain|\\
+%       XXXXXX\mbox{}~~~~~~~~~~~~~~~~~libertinus|libertinus*|libertinus-sans|\\
+%       XXXXXX\mbox{}~~~~~~~~~~~~~~~~~pifont|pifont*|pifont-sans|pifont-sans*|\\
+%       XXXXXX\mbox{}~~~~~~~~~~~~~~~~~xits|xits-sans|xits-sans*>*)
+%   \end{fdusyntax}
+%   设置脚注编号样式。西文字体设置会影响其默认取值（见
+%   表~\ref{tab:footnote-font}）。因此，要使得该选项生效，需将其
+%   放置在 \opt{font} 选项之后。带有 |sans| 的为相应的无衬线字体
+%   版本；带有 |*| 的为阴文样式（即黑底白字）。
+% \end{function}
+%^^A! \begin{function}{style/footnote-style}
+%^^A!   \begin{fdusyntax}[emph={[1]footnote-style}]
+%^^A!     footnote-style = (*<plain|\\
+%^^A!       XXXX\mbox{}~~~~~~~~~~~~~~~~~libertinus|libertinus*|libertinus-sans|\\
+%^^A!       XXXX\mbox{}~~~~~~~~~~~~~~~~~pifont|pifont*|pifont-sans|pifont-sans*|\\
+%^^A!       XXXX\mbox{}~~~~~~~~~~~~~~~~~xits|xits-sans|xits-sans*>*)
+%^^A!   \end{fdusyntax}
+%^^A!   Set the style of footnote numbers. Note that western fonts
+%^^A!   will affect its default value (see table~\ref{tab:footnote-font}),
+%^^A!   so you may put it after |font| option. The one with |sans|
+%^^A!   is for the corresponding sans-serif version, while |*|
+%^^A!   for white on black version.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{table}[ht]
+%   \caption{西文字体与脚注编号样式默认值的对应关系}
+%   \label{tab:footnote-font}
+%   \centering
+%   \begin{tabular}{ccccc}
+%     \toprule
+%     \textbf{西文字体设置} &
+%       |libertinus| & |lm|     & |palatino| & |times| \\
+%     \midrule
+%     \textbf{脚注编号样式默认值} &
+%       |libertinus| & |pifont| & |pifont|   & |xits|  \\
+%     \bottomrule
+%   \end{tabular}
+% \end{table}
+%^^A! \begin{table}[ht]
+%^^A!   \caption{Relationship between option \opt{font} and the
+%^^A!     default value of \opt{footnote-style}}
+%^^A!   \label{tab:footnote-font}
+%^^A!   \centering
+%^^A!   \begin{tabular}{ccccc}
+%^^A!     \toprule
+%^^A!     \textbf{Western fonts settings} &
+%^^A!       |libertinus| & |lm|     & |palatino| & |times| \\
+%^^A!     \midrule
+%^^A!     \textbf{Default value of footnote number style} &
+%^^A!       |libertinus| & |pifont| & |pifont|   & |xits|  \\
+%^^A!     \bottomrule
+%^^A!   \end{tabular}
+%^^A! \end{table}
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2017-08-13]{style/hyperlink}
+%   \begin{fdusyntax}[emph={[1]hyperlink}]
+%     hyperlink = (*<border|(color)|none>*)
+%   \end{fdusyntax}
+%^^A-
+%   设置超链接样式。\opt{border} 表示在超链接四周绘制方框；
+%   \opt{color} 表示用彩色显示超链接；\opt{none} 表示没有特殊装饰，
+%   可用于生成最终的打印版文稿。
+% \end{function}
+%^^A!   Set the style of hyperlinks. \opt{border} draws borders around
+%^^A!   hyperlinks; \opt{color} displays hyperlinks in colorful text;
+%^^A!   \opt{none} leads to plain text, which is useful when printing
+%^^A!   the final document.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2017-08-13,updated=2017-12-08]{style/hyperlink-color}
+%   \begin{fdusyntax}[emph={[1]hyperlink-color}]
+%     hyperlink-color = (*<(default)|classic|elegant|fantasy|material|\\
+%       XXXXXX\mbox{}~~~~~~~~~~~~~~~~~~business|science|summer|autumn|graylevel|prl>*)
+%   \end{fdusyntax}
+%   设置超链接颜色。该选项在 \kvopt{hyperlink}{none} 时无效。
+%   各选项所代表的颜色见表~\ref{tab:hyperlink-color}。
+% \end{function}
+%^^A! \begin{function}[added=2017-08-13,updated=2017-12-08]{style/hyperlink-color}
+%^^A!   \begin{fdusyntax}[emph={[1]hyperlink-color}]
+%^^A!     hyperlink-color = (*<(default)|classic|elegant|fantasy|material|\\
+%^^A!       XXXX\mbox{}~~~~~~~~~~~~~~~~~~business|science|summer|autumn|graylevel|prl>*)
+%^^A!   \end{fdusyntax}
+%^^A!   Set the color of hyperlinks. It is invalid if
+%^^A!   \kvopt{hyperlink}{none}. The related colors can be found
+%^^A!   in table~\ref{tab:hyperlink-color}.
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{table}[ht]
+% \centering
+%^^A-
+% \newcommand\linkcolorexam[3]{^^A
+%   {\small 图~\textcolor[HTML]{#1}{1-2}，
+%     (\textcolor[HTML]{#1}{3.4})~式} &
+%   {\small \textcolor[HTML]{#2}{\texttt{http://g.cn}}} &
+%   {\small 文献~[\textcolor[HTML]{#3}{1}]，
+%     (\textcolor[HTML]{#3}{Knuth~1986})}}
+%^^A! \newcommand\linkcolorexam[3]{%
+%^^A!   {\small Fig.~\textcolor[HTML]{#1}{1-2}，
+%^^A!     Eq.~(\textcolor[HTML]{#1}{3.4})} &
+%^^A!   {\small \textcolor[HTML]{#2}{\texttt{http://g.cn}}} &
+%^^A!   {\small Ref.~[\textcolor[HTML]{#3}{1}]，
+%^^A!     (\textcolor[HTML]{#3}{Knuth~1986})}}
+% \begin{threeparttable}
+% \caption{预定义的超链接颜色方案}
+% \label{tab:hyperlink-color}
+%^^A! \begin{threeparttable}
+%^^A! \caption{Pre-defined hyperlink color schemes}
+%^^A! \label{tab:hyperlink-color}
+% \begin{tabular}{c*{3}{>{\hspace{0.2cm}}c<{\hspace{0.2cm}}}}
+%   \toprule
+%   \textsf{选项} & \textsf{链接} & \textsf{URL} & \textsf{引用} \\
+%^^A! \begin{tabular}{c*{3}{>{\hspace{0.2cm}}c<{\hspace{0.2cm}}}}
+%^^A!   \toprule
+%^^A!   \textsf{Options} & \textsf{Cross references} & \textsf{URL} & \textsf{Citation} \\
+%^^A+
+%   \midrule
+%   \opt{default}            & \linkcolorexam{990000}{0000B2}{007F00} \\
+%   \opt{classic}            & \linkcolorexam{FF0000}{0000FF}{00FF00} \\
+%   \opt{elegant}\tnote{a}   & \linkcolorexam{961212}{C31818}{9B764F} \\
+%   \opt{fantasy}\tnote{b}   & \linkcolorexam{FF4A19}{FF3F94}{934BA1} \\
+%   \opt{material}\tnote{c}  & \linkcolorexam{E91E63}{009688}{4CAF50} \\
+%   \opt{business}\tnote{d}  & \linkcolorexam{D14542}{295497}{1F6E43} \\
+%   \opt{science}\tnote{e}   & \linkcolorexam{CA0619}{389F9D}{FF8920} \\
+%   \opt{summer}\tnote{f}    & \linkcolorexam{00AFAF}{5F5FAF}{5F8700} \\
+%   \opt{autumn}\tnote{f}    & \linkcolorexam{D70000}{D75F00}{AF8700} \\
+%   \opt{graylevel}\tnote{c} & \linkcolorexam{616161}{616161}{616161} \\
+%   \opt{prl}\tnote{g}       & \linkcolorexam{2D3092}{2D3092}{2D3092} \\
+%   \bottomrule
+% \end{tabular}
+% \begin{tablenotes}
+%^^A-
+%   \item[a] 来自 \href{https://tex.stackexchange.com/}^^A
+%     {\TeX{} - \LaTeX{} Stack Exchange 网站}。
+%   \item[b] Adobe CC 产品配色。
+%   \item[c] 取自 Material 色彩方案
+%     （见 \url{https://material.io/guidelines/style/color.html}）。
+%   \item[d] Microsoft Office 2016 产品配色。
+%   \item[e] 来自 \href{https://www.wolfram.com/}{Wolfram Research 网站}。
+%   \item[f] 均取自 Solarized 色彩方案
+%     （见 \url{http://ethanschoonover.com/solarized}）。
+%   \item[g] \textit{Physical Review Letter} 杂志配色。
+%^^A!   \item[a] From \href{https://tex.stackexchange.com/}%
+%^^A!     {\TeX{} - \LaTeX{} Stack Exchange}.
+%^^A!   \item[b] Adobe CC.
+%^^A!   \item[c] Material Design color palette
+%^^A!     (See \url{https://material.io/guidelines/style/color.html}).
+%^^A!   \item[d] Microsoft Office 2016.
+%^^A!   \item[e] From \href{https://www.wolfram.com/}{Wolfram Research website}.
+%^^A!   \item[f] Solarized color palette
+%^^A!     (See \url{http://ethanschoonover.com/solarized}).
+%^^A!   \item[g] \textit{Physical Review Letter} magazine.
+%^^A+
+% \end{tablenotes}
+% \end{threeparttable}
+% \end{table}
+%^^A-
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2018-01-25]{style/bib-backend}
+%   \begin{fdusyntax}[emph={[1]bib-backend}]
+%     bib-backend = (*<bibtex|biblatex>*)
+%   \end{fdusyntax}
+%^^A-
+%   选择参考文献的支持方式。选择 \opt{bibtex} 后，将使用 \BibTeX{}
+%   处理文献，样式由 \pkg{natbib} 宏包负责；选择 \opt{biblatex} 后，
+%   将使用 \biber{} 处理文献，样式则由 \pkg{biblatex} 宏包负责。
+% \end{function}
+%^^A!   Specify the backend or driver of bibliography processing.
+%^^A!   \BibTeX{} and \pkg{natbib} package will be used if you choose
+%^^A!   \opt{bibtex}, while \biber{} and \pkg{biblatex} will be used
+%^^A!   if you choose \opt{biblatex}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2017-10-28,updated=2018-01-25]^^A
+%     {style/bib-style}
+%   \begin{fdusyntax}[emph={[1]bib-style}]
+%     bib-style = (*<author-year|(numerical)|\meta{其他样式}>*)
+%   \end{fdusyntax}
+%   设置参考文献样式。\opt{author-year} 和 \opt{numerical} 分别对应
+%   国家标准 GB/T 7714--2015 \scite{gb-t-7714-2015} 中的著者—出版年制
+%   和顺序编码制。选择 \meta{其他样式} 时，如果 \kvopt{bib-backend}^^A
+%   {bibtex}，需保证相应的 \file{.bst} 格式文件能被调用；而如果
+%   \kvopt{bib-backend}{biblatex}，则需保证相应的 \file{.bbx} 格式文件
+%   能被调用。
+% \end{function}
+%^^A! \begin{function}[added=2017-10-28,updated=2018-01-25]%
+%^^A!     {style/bib-style}
+%^^A!   \begin{fdusyntax}[emph={[1]bib-style}]
+%^^A!     bib-style = (*<author-year|(numerical)|\meta{other style}>*)
+%^^A!   \end{fdusyntax}
+%^^A!   Set the style of bibliography. \opt{author-year} and
+%^^A!   \opt{numerical} will follow the standard GB/T 7714--2015.
+%^^A!   By setting \kvopt{bib-style}{\meta{other style}}, you can use
+%^^A!   other bibliography style (\file{.bst} file for
+%^^A!   \kvopt{bib-backend}{bibtex} and \file{.bbx} file for
+%^^A!   \kvopt{bib-backend}{biblatex}). Suffix is not needed.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2018-01-25]{style/cite-style}
+%   \begin{fdusyntax}[emph={[1]cite-style}]
+%     cite-style = (*\marg{引用样式}*)
+%   \end{fdusyntax}
+%   选择引用格式。默认为空，即与参考文献样式（著者—出版年制或顺序
+%   编码制）保持一致。如果手动填写，需保证相应的 \file{.cbx} 格式文件
+%   能被调用。该选项在 \kvopt{bib-backend}{bibtex} 时无效。
+% \end{function}
+%^^A! \begin{function}[added=2018-01-25]{style/cite-style}
+%^^A!   \begin{fdusyntax}[emph={[1]cite-style}]
+%^^A!     cite-style = (*\marg{style}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Select citation style. Default value is empty, which means
+%^^A!   the citation style will follow your bibliography style
+%^^A!   (author-year or numeric). If you want change the citation
+%^^A!   style, the corresponding \file{.cbx} file must be available.
+%^^A!   This option is invalid when \kvopt{bib-backend}{bibtex}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2018-01-25]{style/bib-resource}
+%   \begin{fdusyntax}[emph={[1]bib-resource}]
+%     bib-resource = (*\marg{文件}*)
+%   \end{fdusyntax}
+%   参考文献数据源。可以是单个文件，也可以是用英文逗号隔开的一组文件。
+%   如果 \kvopt{bib-backend}{biblatex}，则必须明确给出 \file{.bib}
+%   后缀名。
+% \end{function}
+%^^A! \begin{function}[added=2018-01-25]{style/bib-resource}
+%^^A!   \begin{fdusyntax}[emph={[1]bib-resource}]
+%^^A!     bib-resource = (*\marg{bib file(s)}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Specify the bibliography database (usually in \file{.bib}
+%^^A!   format). If using more than one files, the file names should
+%^^A!   be separated with comma. When \kvopt{bib-backend}{biblatex},
+%^^A!   you must type in the ``\file{.bib}'' suffix.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2017-08-10]{style/logo}
+%   \begin{fdusyntax}[emph={[1]logo}]
+%     logo = (*\marg{文件}*)
+%   \end{fdusyntax}
+%   封面中校名图片的文件名。默认值为 \file{fudan-name.pdf}。
+% \end{function}
+%^^A! \begin{function}[added=2017-08-10]{style/logo}
+%^^A!   \begin{fdusyntax}[emph={[1]logo}]
+%^^A!     logo = (*\marg{file}*)
+%^^A!   \end{fdusyntax}
+%^^A!   File name of the logo in thesis cover. Default value is
+%^^A!   \file{fudan-name.pdf}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2017-08-10]{style/logo-size}
+%   \begin{fdusyntax}[emph={[1]logo-size}]
+%     logo-size = (*\marg{宽度}*)
+%     logo-size = {(*\meta{宽度}*), (*\meta{高度}*)}
+%   \end{fdusyntax}
+%   校名图片的大小。默认仅指定了宽度，为 |0.5\textwidth|\/。
+%   如果仅需指定高度，可在 \meta{宽度} 处填入一个空的分组 |{}|。
+% \end{function}
+%^^A! \begin{function}[added=2017-08-10]{style/logo-size}
+%^^A!   \begin{fdusyntax}[emph={[1]logo-size}]
+%^^A!     logo-size = (*\marg{width}*)
+%^^A!     logo-size = {(*\meta{width}*), (*\meta{height}*)}
+%^^A!   \end{fdusyntax}
+%^^A!   Size of the logo. By default, only width is set to
+%^^A!   |0.5\textwidth|. To set height only, you can put an
+%^^A!   empty group ``|{}|'' at \meta{width}.
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2017-07-06]{style/auto-make-cover}
+%   \begin{fdusyntax}[emph={[1]auto-make-cover}]
+%     auto-make-cover = (*<\TTF>*)
+%   \end{fdusyntax}
+%^^A-
+%   是否自动生成论文封面（封一）、指导小组成员名单（封二）和
+%   声明页（封三）。封面中的各项信息，可通过 \cs{fdusetup} 录入，
+%   具体请参阅 \ref{subsubsec:信息录入}~节。
+% \end{function}
+%^^A!   Whether generate thesis cover, list of instructors (inside
+%^^A!   front cover) and declaration page (inside back cover)
+%^^A!   automatically. Entries in the cover can be specified also
+%^^A!   via \cs{fdusetup}, and you can find more details in
+%^^A!   subsubsection~\ref{subsubsec:information}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{\makecoveri,\makecoverii,\makecoveriii}
+%   用于手动生成论文封面、指导小组成员名单和声明页。这几个命令不能
+%   确保页码的正确编排，因此除非必要，您应当始终使用自动生成的封面。
+% \end{function}
+%^^A! \begin{function}{\makecoveri,\makecoverii,\makecoveriii}
+%^^A!   For generating thesis cover, list of instructors and
+%^^A!   declaration page manually. These commands cannot ensure
+%^^A!   the correct page numbers, hence you should always use the
+%^^A!   auto-generated thesis cover unless necessary.
+%^^A! \end{function}
+%^^A!
+%
+% \subsubsection{信息录入} \label{subsubsec:信息录入}
+%^^A! \subsubsection{Personal information} \label{subsubsec:information}
+%^^A!
+%
+% \begin{function}{info}
+%   \begin{fdusyntax}[emph={[1]info}]
+%     info = (*\marg{键值列表}*)
+%     info/(*\meta{key}*) = (*\meta{value}*)
+%   \end{fdusyntax}
+%   该选项包含许多子项目，用于录入论文信息。具体内容见下。以下带“|*|”
+%   的项目表示对应的英文字段。
+% \end{function}
+%^^A! \begin{function}{info}
+%^^A!   \begin{fdusyntax}[emph={[1]info}]
+%^^A!     info = (*\marg{key-value list}*)
+%^^A!     info/(*\meta{key}*) = (*\meta{value}*)
+%^^A!   \end{fdusyntax}
+%^^A!   This general option is for entering your personal information.
+%^^A!   See the following details. Note that options with ``|*|'' are
+%^^A!   the corresponding English items.
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2018-02-01]{info/degree}
+%   \begin{fdusyntax}[emph={[1]degree}]
+%     degree = (*<(academic)|professional>*)
+%   \end{fdusyntax}
+%^^A-
+%   学位类型。本选项仅用于硕士学位论文，\opt{academic} 和
+%   \opt{professional} 分表表示学术学位和专业学位。
+% \end{function}
+%^^A!   Degree type. This option can only be used in master degree
+%^^A!   thesis.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/title,info/title*}
+%   \begin{fdusyntax}[emph={[1]title,title*}]
+%     title  = (*\marg{中文标题}*)
+%     title* = (*\marg{英文标题}*)
+%   \end{fdusyntax}
+%   论文标题。默认会在约 20 个汉字字宽处强制断行，但为了语义的
+%   连贯以及排版的美观，如果您的标题长于一行，建议使用“|\\|”
+%   手动断行。
+% \end{function}
+%^^A! \begin{function}{info/title,info/title*}
+%^^A!   \begin{fdusyntax}[emph={[1]title,title*}]
+%^^A!     title  = (*\marg{title in Chinese}*)
+%^^A!     title* = (*\marg{title in English}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Title of your thesis. The line width is about \SI{30}{em} by
+%^^A!   default, but you may break it with |\\| manually.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/author,info/author*}
+%   \begin{fdusyntax}[emph={[1]author,author*}]
+%     author  = (*\marg{姓名}*)
+%     author* = (*\marg{英文姓名（或拼音）}*)
+%   \end{fdusyntax}
+%   作者姓名。
+% \end{function}
+%^^A! \begin{function}{info/author,info/author*}
+%^^A!   \begin{fdusyntax}[emph={[1]author,author*}]
+%^^A!     author  = (*\marg{name in Chinese}*)
+%^^A!     author* = (*\marg{name in English \lparen or Pinyin\rparen}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Author's name.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/supervisor}
+%   \begin{fdusyntax}[emph={[1]supervisor}]
+%     supervisor = (*\marg{姓名}*)
+%   \end{fdusyntax}
+%   导师姓名。
+% \end{function}
+%^^A! \begin{function}{info/supervisor}
+%^^A!   \begin{fdusyntax}[emph={[1]supervisor}]
+%^^A!     supervisor = (*\marg{name}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Supervisor's name.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/department}
+%   \begin{fdusyntax}[emph={[1]department}]
+%     department = (*\marg{名称}*)
+%   \end{fdusyntax}
+%   院系名称。
+% \end{function}
+%^^A! \begin{function}{info/department}
+%^^A!   \begin{fdusyntax}[emph={[1]department}]
+%^^A!     department = (*\marg{name}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Name of the department.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/major}
+%   \begin{fdusyntax}[emph={[1]major}]
+%     major = (*\marg{名称}*)
+%   \end{fdusyntax}
+%   专业名称。
+% \end{function}
+%^^A! \begin{function}{info/major}
+%^^A!   \begin{fdusyntax}[emph={[1]major}]
+%^^A!     major = (*\marg{name}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Name of the major.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/student-id}
+%   \begin{fdusyntax}[emph={[1]student-id}]
+%     student-id = (*\marg{数字}*)
+%   \end{fdusyntax}
+%   作者学号。
+% \end{function}
+%^^A! \begin{function}{info/student-id}
+%^^A!   \begin{fdusyntax}[emph={[1]student-id}]
+%^^A!     student-id = (*\marg{number}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Author's student ID.
+%^^A! \end{function}
+%^^A!
+%
+% 复旦大学学号共 11 位，前两位为入学年份，之后一位为学生类型
+% 代码（博士生为 1，硕士生为 2，本科生为 3），接下来的五位为
+% 专业代码，最后三位为顺序号。
+%^^A! In Fudan University, student ID has 11 digits. The first two
+%^^A! are the year of attendance; next one represents the student's
+%^^A! type (1 for doctor, 2 for master and 3 for bachelor); the
+%^^A! following five digits are major ID while the last three are
+%^^A! serial number.
+%^^A!
+%
+% \begin{function}{info/school-id}
+%   \begin{fdusyntax}[emph={[1]school-id}]
+%     school-id = (*\marg{数字}*)
+%   \end{fdusyntax}
+%   学校代码。默认值为 10246（这是复旦大学的学校代码）。
+% \end{function}
+%^^A! \begin{function}{info/school-id}
+%^^A!   \begin{fdusyntax}[emph={[1]school-id}]
+%^^A!     school-id = (*\marg{number}*)
+%^^A!   \end{fdusyntax}
+%^^A!   School ID. Default value is 10246 (school ID of Fudan University).
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/date}
+%   \begin{fdusyntax}[emph={[1]date}]
+%     date = (*\marg{日期}*)
+%   \end{fdusyntax}
+%   论文完成日期。默认值为文档编译日期（\tn{today}）。
+% \end{function}
+%^^A! \begin{function}{info/date}
+%^^A!   \begin{fdusyntax}[emph={[1]date}]
+%^^A!     date = (*\marg{date}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Finish date of your thesis. Default value is the compilation
+%^^A!   date (\tn{today}).
+%^^A! \end{function}
+%^^A!
+%
+%^^A+
+% \begin{function}[added=2017-07-04]{info/secret-level}
+%   \begin{fdusyntax}[emph={[1]secret-level}]
+%     secret-level = (*<(none)|i|ii|iii>*)
+%   \end{fdusyntax}
+%^^A-
+%   密级。\opt{i}、\opt{ii}、\opt{iii} 分别表示秘密、机密、绝密；
+%   \opt{none} 表示论文不涉密，即不显示密级与保密年限。
+% \end{function}
+%^^A!   Secret level. \opt{i}, \opt{ii} and \opt{iii} means
+%^^A!   ``秘密'' (secret), ``机密'' (confidential) and ``绝密''
+%^^A!   (top secret) respectively. \opt{none} means your thesis is
+%^^A!   not secret-related and secret level and year will not be
+%^^A!   shown.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}[added=2017-07-04]{info/secret-year}
+%   \begin{fdusyntax}[emph={[1]secret-year}]
+%     secret-year = (*\marg{年限}*)
+%   \end{fdusyntax}
+%   保密年限。建议您使用中文，如“五年”。该选项在设置
+%   \kvopt{secret-level}{none} 时无效。
+% \end{function}
+%^^A! \begin{function}[added=2017-07-04]{info/secret-year}
+%^^A!   \begin{fdusyntax}[emph={[1]secret-year}]
+%^^A!     secret-year = (*\marg{year}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Secret year. It's recommended to use Chinese word as ``五年''
+%^^A!   (5 years) here. This option is invalid if you have set
+%^^A!   \kvopt{secret-level}{none}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/instructors}
+%   \begin{fdusyntax}[emph={[1]instructors}]
+%     instructors = (*\marg{成员 1, 成员 2, ...}*)
+%   \end{fdusyntax}
+%   指导小组成员。各成员之间需使用英文逗号隔开。为防止歧义，
+%   可以用分组括号“|{...}|”把各成员字段括起来。
+% \end{function}
+%^^A! \begin{function}{info/instructors}
+%^^A!   \begin{fdusyntax}[emph={[1]instructors}]
+%^^A!     instructors = (*\marg{member 1, member 2, ...}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Instructors' name. Each name should be separated with
+%^^A!   comma. To disambiguate, you may put text containing comma
+%^^A!   into a group ``|{...}|''.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/keywords,info/keywords*}
+%   \begin{fdusyntax}[emph={[1]keywords,keywords*}]
+%     keywords  = (*\marg{中文关键字}*)
+%     keywords* = (*\marg{英文关键字}*)
+%   \end{fdusyntax}
+%   关键字列表。各关键字之间需使用英文逗号隔开。为防止歧义，
+%   可以用分组括号“|{...}|”把各字段括起来。
+% \end{function}
+%^^A! \begin{function}{info/keywords,info/keywords*}
+%^^A!   \begin{fdusyntax}[emph={[1]keywords,keywords*}]
+%^^A!     keywords  = (*\marg{keywords in Chinese}*)
+%^^A!     keywords* = (*\marg{keywords in English}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Keywords list. Each keyword should be separated with comma.
+%^^A!   To disambiguate, you may put text containing comma into a
+%^^A!   group ``|{...}|''.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{info/clc}
+%   \begin{fdusyntax}[emph={[1]clc}]
+%     clc = (*\marg{分类号}*)
+%   \end{fdusyntax}
+%   中图分类号（CLC）。
+% \end{function}
+%^^A! \begin{function}{info/clc}
+%^^A!   \begin{fdusyntax}[emph={[1]clc}]
+%^^A!     clc = (*\marg{classification codes}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Chinese Library Classification (CLC).
+%^^A! \end{function}
+%^^A!
+%
+% \subsection{正文编写}
+%^^A! \subsection{Writing your thesis}
+%^^A!
+%
+% \begin{quote*}[喬孟符][宋]
+%   作樂府亦有法，曰\CJKunderdot{鳳頭豬肚豹尾}六字是也。
+%   大概起要美麗，中要浩蕩，結要響亮。尤貴在首尾貫穿，意思清新。
+%   茍能若是，斯可以言樂府矣。
+% \end{quote*}
+%
+% \subsubsection{凤头}
+%^^A! \subsubsection{Front matter}
+%^^A!
+%
+% \begin{function}{\frontmatter}
+%   声明前置部分开始。
+% \end{function}
+%^^A! \begin{function}{\frontmatter}
+%^^A!   Declare the beginning of front matter.
+%^^A! \end{function}
+%^^A!
+%
+% 在本模板中，前置部分包含目录、中英文摘要以及符号表等。
+% 前置部分的页码采用小写罗马字母，并且与正文分开计数。
+%^^A! Front matter contains table of contents, abstracts and notation
+%^^A! list. The page numbers in front matter will be shown in
+%^^A! lowercase Roman numerals, and will be counted separately with
+%^^A! main matter.
+%^^A!
+%
+% \begin{function}{\tableofcontents}
+%   生成目录。为了生成完整、正确的目录，您至少需要编译\emph{两次}。
+% \end{function}
+%^^A! \begin{function}{\tableofcontents}
+%^^A!   Generate the table of contents (TOC). You need to compile
+%^^A!   the source file at least \emph{twice} to get the correct TOC.
+%^^A! \end{function}
+%^^A!
+%
+%^^A TODO: \DescribeEnv{abstract}
+%^^A TODO: \DescribeEnv{abstract*}
+% \begin{function}{abstract}
+%   \begin{fdusyntax}[emph={[2]abstract}]
+%     % 中文论文模板 (fduthesis)      % 英文论文模板 (fduthesis-en)
+%     \begin{abstract}                \begin{abstract}
+%       (*\meta{中文摘要} \hspace{3.52cm} \meta{英文摘要}*)
+%     \end{abstract}                  \end{abstract}
+%   \end{fdusyntax}
+% \end{function}
+% \begin{function}[rEXP]{abstract*}
+%   \begin{fdusyntax}[emph={[2]abstract*}]
+%     % 中文论文模板 (fduthesis)
+%     \begin{abstract*}
+%       (*\meta{英文摘要}*)
+%     \end{abstract*}
+%   \end{fdusyntax}
+%   摘要。中文模板中，不带星号和带星号的版本分别用来输入中文摘要
+%   和英文摘要；英文模板中没有带星号的版本，您只需输入英文摘要。
+% \end{function}
+%^^A! \begin{function}{abstract}
+%^^A!   \begin{fdusyntax}[emph={[2]abstract}]
+%^^A!     % fduthesis (Chinese thesis)    % fduthesis-en (English thesis)
+%^^A!     \begin{abstract}                \begin{abstract}
+%^^A!       (*\meta{Chinese abstract} \hspace{3cm} \meta{English abstract}*)
+%^^A!     \end{abstract}                  \end{abstract}
+%^^A!   \end{fdusyntax}
+%^^A! \end{function}
+%^^A! \begin{function}[rEXP]{abstract*}
+%^^A!   \begin{fdusyntax}[emph={[2]abstract*}]
+%^^A!     % Only for fduthesis
+%^^A!     \begin{abstract*}
+%^^A!       (*\meta{English abstract}*)
+%^^A!     \end{abstract*}
+%^^A!   \end{fdusyntax}
+%^^A!   Abstract environment. In \cls{fduthesis}, \env{abstract} and
+%^^A!   \env{abstract*} are used for Chinese and English abstract,
+%^^A!   respectively; while in \cls{fduthesis-en}, there is no
+%^^A!   \env{abstract*} environment and you need to write the English
+%^^A!   abstract merely.
+%^^A! \end{function}
+%^^A!
+%
+% 摘要的最后，会显示关键字列表以及中图分类号（CLC）。
+% 这两项可通过 \cs{fdusetup} 录入，具体
+% 请参阅 \ref{subsubsec:信息录入}~节。
+%^^A! At the end of abstract (both Chinese and English, if available),
+%^^A! keywords list and CLC number will be shown. They can be
+%^^A! specified via command \cs{fdusetup} and you may refer to
+%^^A! subsubsection~\ref{subsubsec:information} for more details.
+%^^A!
+%
+%^^A TODO: \DescribeEnv{notation}
+% \begin{function}{notation}
+%   \begin{fdusyntax}[emph={[2]notation}]
+%     \begin{notation}(*\oarg{列格式说明}*)
+%       (*\meta{符号 1}*)  &  (*\meta{说明}*)  \\
+%       (*\meta{符号 2}*)  &  (*\meta{说明}*)  \\
+%       (*\phantom{\meta{符号 $n$}}*)  (*$\vdots$*)
+%       (*\meta{符号\ \kern-0.1em$n$}*)  &  (*\meta{说明}*)
+%     \end{notation}
+%   \end{fdusyntax}
+%   符号表。可选参数\meta{列格式说明}与 \LaTeX{} 中标准表格的列格
+%   式说明语法一致，默认值为“|lp{7.5cm}|”，即第一列宽度自动调整，
+%   第二列限宽 \SI{7.5}{cm}，两列均为左对齐。
+% \end{function}
+%^^A! \begin{function}{notation}
+%^^A!   \begin{fdusyntax}[emph={[2]notation}]
+%^^A!     \begin{notation}(*\oarg{column format}*)
+%^^A!       (*\meta{symbol 1}*)  &  (*\meta{description}*)  \\
+%^^A!       (*\meta{symbol 2}*)  &  (*\meta{description}*)  \\
+%^^A!       (*\phantom{\meta{symbol $n$}}*)  (*$\vdots$*)
+%^^A!       (*\meta{symbol \kern-0.1em$n$}*)  &  (*\meta{description}*)
+%^^A!     \end{notation}
+%^^A!   \end{fdusyntax}
+%^^A!   Notation list (or symbol list, nomenclature) environment.
+%^^A!   The optional argument \meta{column format} is the same as
+%^^A!   in a standard \LaTeX{} table. The default value is
+%^^A!   ``|lp{7.5cm}|'', which means auto-width for the first column
+%^^A!   and fix-width (\SI{7.5}{cm}) for the second; both columns will
+%^^A!   be left-aligned.
+%^^A! \end{function}
+%^^A!
+%
+% \subsubsection{猪肚}
+%^^A! \subsubsection{Main matter}
+%^^A!
+%
+% \begin{function}{\mainmatter}
+%   声明主体部分开始。
+% \end{function}
+%^^A! \begin{function}{\mainmatter}
+%^^A!   Declare the beginning of main matter.
+%^^A! \end{function}
+%^^A!
+%
+% 主体部分是论文的核心，您可以分章节撰写。如有需求，也可以采用
+% 多文件编译的方式。主体部分的页码采用阿拉伯数字。
+%^^A! As the name suggests, ``main matter'' is the main body of your
+%^^A! thesis. When working on a big projects, it's usually a good
+%^^A! idea to split the source file into several parts. The page
+%^^A! numbers in main matter are shown in arabic numerals.
+%^^A!
+%
+% \begin{function}[updated=2018-01-15]{\footnote}
+%   \begin{fdusyntax}[deletetexcs={\footnote},%
+%       morekeywords={\footnote}]
+%     \footnote(*\marg{脚注文字}*)
+%   \end{fdusyntax}
+%   插入脚注。脚注编号样式可利用 \opt{style/footnote-style} 选项控制，
+%   具体见 \ref{subsubsec:论文格式}~小节。
+% \end{function}
+%^^A! \begin{function}[updated=2018-01-15]{\footnote}
+%^^A!   \begin{fdusyntax}[deletetexcs={\footnote},%
+%^^A!       morekeywords={\footnote}]
+%^^A!     \footnote(*\marg{text}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Insert a footnote. The style of footnote numbers can be set
+%^^A!   with option \opt{style/foot\-note\-style}. See subsubsection~%
+%^^A!   \ref{subsubsec:style-and-format} for more details.
+%^^A! \end{function}
+%^^A!
+%
+%^^A TODO: \DescribeEnv{proof}
+% \begin{function}{axiom,corollary,definition,example,lemma,
+%   proof,theorem}
+%   \begin{fdusyntax}[emph={[2]proof}]
+%     \begin{proof}(*\oarg{小标题}*)
+%       (*\meta{证明过程}*)
+%     \end{proof}
+%   \end{fdusyntax}
+%   一系列预定义的数学环境。具体含义见表~\ref{tab:theorem}。
+% \end{function}
+%^^A! \begin{function}{axiom,corollary,definition,example,lemma,
+%^^A!   proof,theorem}
+%^^A!   \begin{fdusyntax}[emph={[2]proof}]
+%^^A!     \begin{proof}(*\oarg{subheading}*)
+%^^A!       (*\meta{procedure of proof}*)
+%^^A!     \end{proof}
+%^^A!   \end{fdusyntax}
+%^^A!   A series of pre-defined math environments.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{table}[ht]
+%   \caption{预定义的数学环境} \label{tab:theorem}
+%   \centering
+%   \begin{tabular}{cccccccc}
+%     \toprule
+%     \textbf{名称} &
+%       \env{axiom}   & \env{corollary} & \env{definition} &
+%       \env{example} & \env{lemma}     & \env{proof}      &
+%       \env{theorem} \\
+%     \midrule
+%     \textbf{含义} &
+%       公理 & 推论 & 定义 & 例 & 引理 & 证明 & 定理 \\
+%     \bottomrule
+%   \end{tabular}
+% \end{table}
+%
+% 证明环境（\env{proof}）的最后会添加证毕符号“$\QED$”。要确保
+% 该符号在正确的位置显示，您需要按照 \ref{subsec:编译方式}~节
+% 中的有关说明编译\emph{两次}。
+%^^A! A QED\footnote{Abbreviation of Latin phrase \emph{quod erat
+%^^A!   demonstrandum}, means ``what was to be demonstrated''.}
+%^^A! symbol ``$\QED$'' will be added at the end of \env{proof}
+%^^A! environment. You need to compile the source file \emph{twice}
+%^^A! as in subsection~\ref{subsec:compilation} in order to make
+%^^A! the position of QED symbol correct.
+%^^A!
+%
+% \begin{function}[updated=2017-12-12]{\newtheorem}
+%   \begin{fdusyntax}[deletetexcs={\newtheorem},
+%       morekeywords={\newtheorem,\newtheorem*}]
+%     \newtheorem(*\oarg{选项}\marg{环境名}\marg{标题}*)
+%     \newtheorem*(*\oarg{选项}\marg{环境名}\marg{标题}*)
+%     \begin(*\marg{环境名}\oarg{小标题}*)
+%       (*\meta{内容}*)
+%     \end(*\marg{环境名}*)
+%   \end{fdusyntax}
+%   声明新的定理类环境（数学环境）。带星号的版本表示不进行编号，
+%   并且会默认添加证毕符号“$\QED$”。声明后，即可同预定义的数学环境
+%   一样使用。
+% \end{function}
+%^^A! \begin{function}[updated=2017-12-12]{\newtheorem}
+%^^A!   \begin{fdusyntax}[deletetexcs={\newtheorem},
+%^^A!       morekeywords={\newtheorem,\newtheorem*}]
+%^^A!     \newtheorem(*\oarg{options}\marg{environment}\marg{title}*)
+%^^A!     \newtheorem*(*\oarg{options}\marg{environment}\marg{title}*)
+%^^A!     \begin(*\marg{environment}\oarg{subheading}*)
+%^^A!       (*\meta{contents}*)
+%^^A!     \end(*\marg{environment}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Declare new math environments (theorems). If you use
+%^^A!   \cs{newtheorem*}, then the theorem will not be numbered, and
+%^^A!   a QED symbol ``$\QED$'' will be added at the end of the
+%^^A!   environment. All the theorem environments defined by yourself
+%^^A!   can be used as the pre-defined ones.
+%^^A! \end{function}
+%^^A!
+%
+% 事实上，表~\ref{tab:theorem} 中预定义的环境正是通过以下方式定义的：
+% \begin{latexexample}[deletetexcs={\newtheorem},
+%     morekeywords={\newtheorem,\newtheorem*}]
+%   \newtheorem*{proof}{证明}
+%   \newtheorem{axiom}{公理}
+%   \newtheorem{corollary}{定理}
+%   ...
+% \end{latexexample}
+%^^A! Actually, the pre-defined math environments are just defined
+%^^A! with \cs{newtheorem} and \cs{newtheorem*}:
+%^^A! \begin{latexexample}[deletetexcs={\newtheorem},
+%^^A!     morekeywords={\newtheorem,\newtheorem*}]
+%^^A!   \newtheorem*{proof}{proof}
+%^^A!   \newtheorem{axiom}{axiom}
+%^^A!   \newtheorem{corollary}{corollary}
+%^^A!   ...
+%^^A! \end{latexexample}
+%^^A!
+%
+% 与 \cs{fdusetup} 相同，\cs{newtheorem} 的可选参数 \meta{选项}
+% 也为一组键值列表。可用的选项见下。注意您无需输入“|theorem/|”。
+%^^A! Similar with \cs{fdusetup}, the optional argument \meta{options}
+%^^A! of \cs{newtheorem} is a key-value list as well. The available
+%^^A! are described below. Note that you don't need to type in the
+%^^A! ``|theorem/|'' prefix.
+%^^A!
+%
+% \begin{function}{theorem/style}
+%   \begin{fdusyntax}[emph={[1]style}]
+%     style = (*<(plain)|margin|change|\\
+%       XXXXXX\mbox{}~~~~~~~~break|marginbreak|changebreak>*)
+%   \end{fdusyntax}
+%   定理类环境的总体样式。
+% \end{function}
+%^^A! \begin{function}{theorem/style}
+%^^A!   \begin{fdusyntax}[emph={[1]style}]
+%^^A!     style = (*<(plain)|margin|change|\\
+%^^A!       XXXX\mbox{}~~~~~~~~break|marginbreak|changebreak>*)
+%^^A!   \end{fdusyntax}
+%^^A!   The overall style of the theorem environment.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{theorem/header-font}
+%   \begin{fdusyntax}[emph={[1]header-font}]
+%     header-font = (*\marg{字体}*)
+%   \end{fdusyntax}
+%   定理头（即标题）的字体。中文模板默认为 \tn{sffamily}，即无衬线体
+%   （黑体）；英文模板默认为 |\bfseries\upshape|，即加粗直立体。
+% \end{function}
+%^^A! \begin{function}{theorem/header-font}
+%^^A!   \begin{fdusyntax}[emph={[1]header-font}]
+%^^A!     header-font = (*\marg{font}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Font of the theorem header. Default value is \tn{sffamily}
+%^^A!   and |\bfseries\upshape| for Chinese and English template,
+%^^A!   respectively.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{theorem/body-font}
+%   \begin{fdusyntax}[emph={[1]body-font}]
+%     body-font = (*\marg{字体}*)
+%   \end{fdusyntax}
+%   定理内容的字体。中文模板默认为 \tn{fdu@kai}，即楷体；英文模板
+%   默认为 \tn{itshape}，即斜体。
+% \end{function}
+%^^A! \begin{function}{theorem/body-font}
+%^^A!   \begin{fdusyntax}[emph={[1]body-font}]
+%^^A!     body-font = (*\marg{font}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Font of the theorem body. Default value is \tn{fdu@kai}
+%^^A!   (\textit{楷体}) and \tn{itshape} for Chinese and English
+%^^A!   template, respectively.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{theorem/qed}
+%   \begin{fdusyntax}[emph={[1]qed}]
+%     qed = (*\marg{符号}*)
+%   \end{fdusyntax}
+%   定理结束标记（即证毕符号）。如果用 \cs{newtheorem} 声明定理，
+%   则默认为空；用 \cs{newtheorem*} 声明，则默认为
+%   |\ensuremath{\QED}|，即“$\QED$”。
+% \end{function}
+%^^A! \begin{function}{theorem/qed}
+%^^A!   \begin{fdusyntax}[emph={[1]qed}]
+%^^A!     qed = (*\marg{symbol}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Theorem end mark. For \cs{newtheorem}, default value is
+%^^A!   empty; for \cs{newtheorem*}, default value is
+%^^A!   |\ensuremath{\QED}| (i.e.\ ``$\QED$'').
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{theorem/counter}
+%   \begin{fdusyntax}[emph={[1]counter}]
+%     counter = (*\marg{计数器}*)
+%   \end{fdusyntax}
+%   定理计数器，表示定理编号在 \meta{计数器} 的下一级，并会随
+%   \meta{计数器} 的变化而清零。\scite{刘海洋2013latex入门}
+%   默认为 |chapter|，表示按章编号。使用 \cs{newtheorem*} 时，
+%   该选项无效。
+% \end{function}
+%^^A! \begin{function}{theorem/counter}
+%^^A!   \begin{fdusyntax}[emph={[1]counter}]
+%^^A!     counter = (*\marg{counter}*)
+%^^A!   \end{fdusyntax}
+%^^A!   The theorem will be enumerated within \meta{counter}. For
+%^^A!   example, the default value is |chapter|, which means with
+%^^A!   each new \tn{chapter}, the enumeration begins again with 1.
+%^^A!   This option is invalid for \cs{newtheorem*}.
+%^^A! \end{function}
+%^^A!
+%
+% \begin{function}{\caption}
+%   \begin{fdusyntax}[deletetexcs={\caption},morekeywords={\caption}]
+%     \caption(*\marg{图表标题}*)
+%     \caption(*\oarg{短标题}\marg{长标题}*)
+%   \end{fdusyntax}
+%   插入图表标题。可选参数 \meta{短标题} 用于图表目录。在
+%   \meta{长标题} 中，您可以进行长达多段的叙述；但 \meta{短标题}
+%   和单独的 \meta{图表标题} 中则不允许分段。
+%   \scite{刘海洋2013latex入门}
+% \end{function}
+%^^A! \begin{function}{\caption}
+%^^A!   \begin{fdusyntax}[deletetexcs={\caption},morekeywords={\caption}]
+%^^A!     \caption(*\marg{caption}*)
+%^^A!     \caption(*\oarg{short caption}\marg{long caption}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Insert the caption of figure or table. The optional argument
+%^^A!   \meta{short caption} will be shown in the list of figures/tables.
+%^^A!   In \meta{long caption}, you can write descriptions for several
+%^^A!   paragraphs, but \meta{short caption} and the single
+%^^A!   \meta{caption} will not allow multi-paragraph text (i.e.\
+%^^A!   text containing \tn{par}) inside.
+%^^A! \end{function}
+%^^A!
+%
+% 按照排版惯例，建议您将表格的标题放置在绘制表格的命令之前，
+% 而将图片的标题放置在绘图或插图的命令之后。另需注意，
+% \tn{caption} 命令必须放置在浮动体环境（如 \env{table} 和
+% \env{figure}）中。
+%^^A! By convention, caption of a table is usually put \emph{before}
+%^^A! the table itself, while for figure it's the opposite.
+%^^A! In addition, command \tn{caption} must be put inside float
+%^^A! environments (e.g.\ \env{table} and \env{figure}).
+%^^A!
+%
+% \subsubsection{豹尾}
+%^^A! \subsubsection{Back matter}
+%^^A!
+%
+% \begin{function}{\backmatter}
+%   声明后置部分开始。
+% \end{function}
+%^^A! \begin{function}{\backmatter}
+%^^A!   Declare the beginning of back matter.
+%^^A! \end{function}
+%^^A!
+%
+% 后置部分包含参考文献、声明页等。
+%^^A! Back matter contains bibliography, declaration page, etc.
+%^^A!
+%
+% \begin{function}[updated=2018-01-25]{\printbibliography}
+%   \begin{fdusyntax}[morekeywords={\printbibliography}]
+%     \printbibliography(*\oarg{选项}*)
+%   \end{fdusyntax}
+%   打印参考文献列表。如果 \kvopt{bib-backend}{bibtex}，则 \meta{选项}
+%   无效，相当于 \tn{bibliography} \texttt{\marg{文献数据库}}，其中的
+%   \meta{文献数据库} 可利用 \opt{style/bib-resource} 选项指定，具体见
+%   \ref{subsubsec:论文格式}~小节；而如果 \kvopt{bib-backend}^^A
+%   {biblatex}，则该命令由 \pkg{biblatex} 宏包直接提供，可用选项请
+%   参阅其文档 \cite{biblatex}。
+% \end{function}
+%^^A! \begin{function}[updated=2018-01-25]{\printbibliography}
+%^^A!   \begin{fdusyntax}[morekeywords={\printbibliography}]
+%^^A!     \printbibliography(*\oarg{options}*)
+%^^A!   \end{fdusyntax}
+%^^A!   Print the bibliography. When \kvopt{bib-backend}{bibtex}, then
+%^^A!   \meta{options} is invalid and this command is equivalent to
+%^^A!   \tn{bibliography} \texttt{\marg{bib files}}, where
+%^^A!   \meta{bib files} should be specified with option
+%^^A!   \opt{style/bib-resource} (see subsubsection~%
+%^^A!   \ref{subsubsec:style-and-format}). When \kvopt{bib-backend}%
+%^^A!   {bibtex}, then \tn{printbibliography} is provided by
+%^^A!   \pkg{biblatex} and the available options can be found in its
+%^^A!   documentation.
+%^^A! \end{function}
+%^^A!
+%
+% \section{宏包依赖情况}
+%^^A! \section{Packages dependencies}
+%^^A!
+%
+% 使用不同编译方式、指定不同选项，会导致宏包依赖情况有所不同。
+% 具体如下：
+% \begin{itemize}
+%   \item 在任何情况下，本模板都会\emph{显式}调用以下宏包
+%     （或文档类）：
+%     \begin{itemize}
+%       \item \pkg{expl3}、\pkg{xparse}、\pkg{xtemplate} 和
+%         \pkg{l3keys2e}，用于构建 \LaTeX3 编程环境
+%         \scite{interfaces3,source3}。它们分属 \pkg{l3kernel} 和
+%         \pkg{l3packages} 宏集。
+%       \item \cls{ctexbook}，提供中文排版的通用框架。属于 \CTeX{}
+%         宏集 \scite{CTeX}。
+%       \item \pkg{amsmath}，对 \LaTeX{} 的数学排版功能进行了
+%         全面扩展。属于 \AmSLaTeX{} 套件。
+%       \item \pkg{unicode-math}，负责处理 Unicode 编码的
+%         OpenType 数学字体。
+%       \item \pkg{geometry}，用于调整页面尺寸。
+%       \item \pkg{fancyhdr}，处理页眉页脚。
+%       \item \pkg{footmisc}，处理脚注。
+%       \item \pkg{ntheorem}，提供增强版的定理类环境。
+%       \item \pkg{graphicx}，提供图形插入的接口。
+%       \item \pkg{longtable}，长表格（允许跨页）支持。
+%       \item \pkg{caption}，用于设置题注。
+%       \item \pkg{natbib}，提供增强的参考文献著录及引用支持。
+%       \item \pkg{xcolor}，提供彩色支持。
+%       \item \pkg{hyperref}，提供交叉引用、超链接、电子书签等功能。
+%     \end{itemize}
+%   \item 开启 \kvopt{style/footnote-style}{pifont} 后，会调用
+%     \pkg{pifont} 宏包。它属于 \pkg{psnfss} 套件。
+%   \item 开启 \kvopt{style/bib-backend}{bibtex} 后，会调用
+%     \pkg{natbib} 宏包，并依赖 \BibTeX{} 程序。参考文献样式由
+%     \pkg{gbt7714} 宏包提供 \scite{natbib,gbt7714}。
+%   \item 开启 \kvopt{style/bib-backend}{biblatex} 后，会调用
+%     \pkg{biblatex} 宏包，并依赖 \biber{} 程序。参考文献样式由
+%     \pkg{biblatex-gb7714-2015} 宏包提供
+%     \scite{biblatex,biblatex-gb7714-2015}。
+% \end{itemize}
+%^^A! Different compilation methods and options will result in a
+%^^A! different packages dependency. Details are as follows:
+%^^A! \begin{itemize}
+%^^A!   \item In any case, \cls{fduthesis} will load the following
+%^^A!     packages \emph{explicitly}:
+%^^A!     \begin{itemize}
+%^^A!       \item \pkg{expl3}, \pkg{xparse}, \pkg{xtemplate} and
+%^^A!         \pkg{l3keys2e}, belong to \pkg{l3kernel} and
+%^^A!         \pkg{l3packages} bundles
+%^^A!       \item \cls{ctexbook}, belongs to \CTeX{} bundle
+%^^A!       \item \pkg{amsmath}, belongs to \AmSLaTeX{} bundle
+%^^A!       \item \pkg{unicode-math}
+%^^A!       \item \pkg{geometry}
+%^^A!       \item \pkg{fancyhdr}
+%^^A!       \item \pkg{footmisc}
+%^^A!       \item \pkg{ntheorem}
+%^^A!       \item \pkg{graphicx}
+%^^A!       \item \pkg{longtable}
+%^^A!       \item \pkg{caption}
+%^^A!       \item \pkg{natbib}
+%^^A!       \item \pkg{xcolor}
+%^^A!       \item \pkg{hyperref}
+%^^A!     \end{itemize}
+%^^A!   \item When chosen \kvopt{style/footnote-style}{pifont},
+%^^A!     package \pkg{pifont} will be loaded. It belongs to
+%^^A!     \pkg{psnfss} bundle.
+%^^A!   \item When chosen \kvopt{style/bib-backend}{bibtex},
+%^^A!     package \pkg{natbib} will be loaded. Meanwhile, program
+%^^A!     \BibTeX{} will be required for compilation. The
+%^^A!     bibliography style is provided by \pkg{gbt7714}.
+%^^A!   \item When chosen \kvopt{style/bib-backend}{biblatex},
+%^^A!     package \pkg{biblatex} will be loaded. Program \biber{}
+%^^A!     will be required then. The bibliography style is provided
+%^^A!     by \pkg{biblatex-gb7714-2015}.
+%^^A! \end{itemize}
+%^^A!
+%
+% 这里只列出了本模板直接调用的宏包。这些宏包自身的调用情况，
+% 此处不再具体展开。如有需要，请参阅相关文档。
+%^^A! Only the packages loaded directly by \cls{fduthesis} are listed
+%^^A! here. If you need to know the dependencies of the packages
+%^^A! themselves, please refer to the corresponding manuals.
+%^^A!
+%
+% \begin{thebibliography}{99}
+%
+% \newcommand\urlprefix{\newline\hspace*{\fill}}
+% \let\OldUrl=\url
+% \renewcommand\url[1]{{\small\OldUrl{#1}}}
+% \newcommand\CTANurl[1]{{\small\href{http://mirror.ctan.org/#1}^^A
+%   {\ttfamily CTAN://#1}}}
+%
+% \bibitem{source2e}
+% \textsc{Braams J}, \textsc{Carlisle D}, \textsc{Jeffrey A}, et al.
+% \newblock \textit{The \LaTeXe{} Sources} [CP/OL].
+% \newblock (2018-04-01) \urlprefix
+%   \CTANurl{macros/latex/base/source2e.pdf}
+%
+% \bibitem{CTeX}
+% \textsc{CTEX.ORG}.
+% \newblock \textit{\CTeX{} 宏集手册} [EB/OL].
+% \newblock version 2.4.12,
+% \newblock (2018-01-28) \urlprefix
+%   \CTANurl{language/chinese/ctex/ctex.pdf}
+%
+% \bibitem{xeCJK}
+% \textsc{CTEX.ORG}.
+% \newblock \textit{\pkg{xeCJK} 宏包} [EB/OL].
+% \newblock version 3.7.0,
+% \newblock (2018-04-07) \urlprefix
+%   \CTANurl{macros/xetex/latex/xecjk/xeCJK.pdf}
+%
+% \bibitem{natbib}
+% \textsc{Daly P W}.
+% \newblock \textit{Natural Sciences Citations and References} [EB/OL].
+% \newblock version 8.31b,
+% \newblock (2010-09-13) \urlprefix
+%   \CTANurl{macros/latex/contrib/natbib/natbib.pdf}
+%
+% \bibitem{hmshan2017fduphdthesistemplate}
+% \textsc{hmshan}.
+% \newblock \textit{复旦博士论文模板} [EB/OL].
+% \newblock (2017-04-04) \urlprefix
+%   \url{https://github.com/hmshan/FDU_PhD_Thesis_Template}
+%
+% \bibitem{knuth1986texbook}
+% \textsc{Knuth D E}.
+% \newblock \textit{The \TeX book: Computers \& Typesetting, volumn A} [M].
+% \newblock Boston: Addison--Wesley Publishing Company, 1986
+%   \urlprefix {\small {\kaishu 源代码
+%     \footnote{此代码只可作为学习之用。未经 Knuth 本人同意，您不应当编译此文档。}：}
+%     \CTANurl{systems/knuth/dist/tex/texbook.tex}}
+%
+% \bibitem{interfaces3}
+% \textsc{The \LaTeX3 Project}.
+% \newblock \textit{The \LaTeX3 Interfaces} [EB/OL].
+% \newblock (2018-03-05) \urlprefix
+%   \CTANurl{macros/latex/contrib/l3kernel/interface3.pdf}
+%
+% \bibitem{source3}
+% \textsc{The \LaTeX3 Project}.
+% \newblock \textit{The \LaTeX3 Sources} [CP/OL].
+% \newblock (2018-03-05) \urlprefix
+%   \CTANurl{macros/latex/contrib/l3kernel/source3.pdf}
+%
+% \bibitem{biblatex}
+% \textsc{Lehman P}, \textsc{Kime P}, \textsc{Boruvka A}, et al.
+% \newblock \textit{The \pkg{biblatex} Package} [EB/OL].
+% \newblock version 3.11,
+% \newblock (2018-03-01) \urlprefix
+%   \CTANurl{macros/latex/contrib/biblatex/doc/biblatex.pdf}
+%
+% \bibitem{mittelbach2004latexcompanion}
+% \textsc{Mittelbach F} and \textsc{Goossens M}.
+% \newblock \textit{The \LaTeX{} Companion} [M].
+% \newblock 2nd ed.
+% \newblock Boston: Addison--Wesley Publishing Company, 2004
+%
+% \bibitem{lshort}
+% \textsc{Oetiker T}, \textsc{Partl H}, \textsc{Hyna I}, et al.
+% \newblock \textit{The Not So Short Introduction to \LaTeXe{}: Or \LaTeXe{} in 139 minutes} [EB/OL].
+% \newblock version 6.2,
+% \newblock (2018-02-28) \urlprefix
+%   \CTANurl{info/lshort/english/lshort.pdf}
+%
+% \bibitem{lshort-zh-cn}
+% \textsc{Oetiker T}, \textsc{Partl H}, \textsc{Hyna I}, et al.
+% \newblock \textit{一份不太简短的 \LaTeXe{} 介绍: 或 102 分钟了解 \LaTeXe{}} [EB/OL].
+% \newblock China\TeX{} 论坛, 译.
+% \newblock 原版版本 version 5.05, 中文版本 version 5.10,
+% \newblock (2017-03-26) \urlprefix
+%   \CTANurl{info/lshort/chinese/lshort-zh-cn.pdf}
+%
+% \bibitem{pandoxie2014fduthesislatex}
+% \textsc{Pandoxie}.
+% \newblock \textit{Fudan University-Latex Template} [EB/OL].
+% \newblock (2014-06-07) \urlprefix
+%   \url{https://github.com/Pandoxie/FDU-Thesis-Latex}
+%
+% \bibitem{richard2016fudanthesis}
+% \textsc{richard}.
+% \newblock \textit{复旦大学硕士学位论文模板} [EB/OL].
+% \newblock (2016-01-31) \urlprefix
+%   \url{https://github.com/richarddzh/fudan-thesis}
+%
+% \bibitem{weijianwen2017sjtuthesis}
+% \textsc{weijianwen}.
+% \newblock \textit{A \XeLaTeX{} template for Shanghai Jiao Tong University (SJTU) thesis} [EB/OL].
+% \newblock version 0.10,
+% \newblock (2018-02-11) \urlprefix
+%   \url{https://github.com/weijianwen/SJTUThesis}
+%
+% \bibitem{wright2009dtxfile}
+% \textsc{Wright J}.
+% \newblock \textit{A model dtx file} [EB/OL].
+% \newblock (2009-10-06) \urlprefix
+%   \url{http://www.texdev.net/2009/10/06/a-model-dtx-file}
+%
+% \bibitem{gbt7714}
+% \textsc{Zeping Lee}.
+% \newblock \textit{GB/T 7714-2015 \BibTeX{} Style} [EB/OL].
+% \newblock version 1.0.3,
+% \newblock (2018-03-16) \urlprefix
+%   \CTANurl{biblio/bibtex/contrib/gbt7714/gbt7714.pdf}
+%
+% \bibitem{zepinglee2017ustcthesis}
+% \textsc{Zeping Lee} and \textsc{seisman}.
+% \newblock \textit{\LaTeX{} template for USTC thesis v3.0} [EB/OL].
+% \newblock version 3.0.4,
+% \newblock (2018-04-03) \urlprefix
+%   \url{https://github.com/ustctug/ustcthesis}
+%
+% \bibitem{数院毕业论文格式}
+% 复旦大学数学科学学院.
+% \newblock \textit{毕业论文格式 tex 版和 word 版} [EB/OL]. \urlprefix
+%   \url{http://math.fudan.edu.cn/show.aspx?info_lb=664&flag=101&info_id=1816}
+%
+% \bibitem{数院毕业论文格式更新}
+% 复旦大学数学科学学院.
+% \newblock \textit{毕业论文格式: Word、\TeX{} 模板更新} [EB/OL]. \urlprefix
+%   \url{http://math.fudan.edu.cn/Show.aspx?info_lb=664&info_id=1855&flag=101}
+%
+% \bibitem{复旦大学论文规范}
+% 复旦大学图书馆, 复旦大学研究生院.
+% \newblock \textit{复旦大学博士、硕士学位论文规范} [EB/OL].
+% \newblock 2017 年 3 月修订版.
+% \newblock (2017-03-27) \urlprefix
+%   \url{http://www.gs.fudan.edu.cn/_upload/article/4c/a8/a82545ef443b9c057c14ba13782c/c883c6f3-6d7f-410c-8f30-d8bde6fcb990.doc}
+%
+% \bibitem{gb-t-7713.1-2006}
+% 国务院学位委员会办公室, 全国信息与文献标准化技术委员会.
+% \newblock \textit{学位论文编写规则: GB/T 7713.1--2006} [S].
+% \newblock 北京: 中国标准出版社, 2007
+%
+% \bibitem{胡伟2017latex2e}
+% 胡伟.
+% \newblock \textit{\LaTeXe{} 文类和宏包学习手册} [M].
+% \newblock 北京: 清华大学出版社, 2017
+%
+% \bibitem{biblatex-gb7714-2015}
+% 胡振震.
+% \newblock \textit{符合 GB/T 7714-2015 标准的 biblatex 参考文献样式} [EB/OL].
+% \newblock version 1.0i,
+% \newblock (2018-01-14) \urlprefix
+% {\small\href{http://mirror.ctan.org/macros/latex/contrib/biblatex-contrib/biblatex-gb7714-2015/biblatex-gb7714-2015.pdf}^^A
+%   {\ttfamily CTAN://macros/latex/contrib/biblatex-contrib/biblatex-gb7714-2015/biblatex-gb77 14-2015.pdf}}
+%
+% \bibitem{gb-t-15834-2011}
+% 教育部语言文字信息管理司.
+% \newblock \textit{标点符号用法: GB/T 15834--2011} [S].
+% \newblock 北京: 中国标准出版社, 2012
+%
+% \bibitem{cquthesis}
+% 李振楠.
+% \newblock \textit{\textsc{CquThesis}：重庆大学毕业论文 \LaTeX{} 模板} [EB/OL].
+% \newblock version 1.30,
+% \newblock (2018-02-23) \urlprefix
+%   \CTANurl{macros/latex/contrib/cquthesis/cquthesis.pdf}
+%
+% \bibitem{刘海洋2013latex入门}
+% 刘海洋.
+% \newblock \textit{\LaTeX{} 入门} [M].
+% \newblock 北京: 电子工业出版社, 2013
+%
+% \bibitem{gb-t-7714-2015}
+% 全国信息与文献标准化技术委员会.
+% \newblock \textit{信息与文献 参考文献著录规则: GB/T 7714--2015} [S].
+% \newblock 北京: 中国标准出版社, 2015
+%
+% \bibitem{thuthesis}
+% 薛瑞尼.
+% \newblock \textit{\textsc{ThuThesis}：清华大学学位论文模板} [EB/OL].
+% \newblock version 5.4.3,
+% \newblock (2017-12-24) \urlprefix
+%   \CTANurl{macros/latex/contrib/thuthesis/thuthesis.pdf}
+%
+% \end{thebibliography}
+%
+% \clearpage
+%
+%^^A! \end{document}
+%
+% \end{documentation}
+%
+%^^A \EnableImplementation
+%^^A \DisableImplementation
+%
+% \begin{implementation}
+%
+%^^A 代码部分的页边距
+% \newgeometry{
+%   left      = 2.25 in,
+%   right     = 1.00 in,
+%   top       = 1.25 in,
+%   bottom    = 1.00 in,
+%   marginpar = 2.25 in
+% }
+%
+% \section{实现细节}
+%
+% 本模板使用 \LaTeX3 语法编写，依赖 \pkg{expl3} 环境，
+% 并需调用 \pkg{l3packages} 中的相关宏包。
+%
+% 按照 \LaTeX3 语法，代码中的空格、换行、回车与制表符完全忽略，
+% 而下划线“|_|”和冒号“|:|”则可作为一般字母使用。
+% 正常的空格可以使用“|~|”代替；至于 |~| 原来所表示的“带子”，
+% 则要用 \LaTeXe{} 的原始命令 \tn{nobreakspace} 代替。
+%
+% 以下代码中有一些形如 \textcolor[HTML]{2E3191}^^A
+% {\textsf{\textlangle *class\textrangle}} 的标记，这是
+% \pkg{DocStrip} 中的“guard”，用来选择性地提取文件。
+% “\textsf{*}”和“\textsf{/}”分别表示该部分的开始和结束。不含
+% “\textsf{*}”和“\textsf{/}”的 guard 出现在行号右侧，它们用来确定
+% 单独一行代码的归属。这些 guard 的颜色深浅不一，用以明确嵌套关系。
+%
+% 另有若干形如 \textcolor{MaterialPink}^^A
+% {\textsf{\textlangle @@=fdu\textrangle}} 的 guard ，它们由
+% \pkg{l3docstrip} 定义，用来指示名字空间（模块）。
+%
+% \subsection{准备}
+%
+%    \begin{macrocode}
+%<@@=fdu>
+%<*class|class-en>
+%    \end{macrocode}
+%
+% 检查 \LaTeX3 编程环境。
+%    \begin{macrocode}
+\RequirePackage { xparse, xtemplate, l3keys2e }
+\clist_map_inline:nn { expl3, xparse, xtemplate, l3keys2e }
+  {
+    \@ifpackagelater {#1} { 2017/12/16 }
+      { } { \msg_error:nnn { fduthesis } { l3-too-old } {#1} }
+  }
+\msg_new:nnn { fduthesis } { l3-too-old }
+  {
+    Package~ "#1"~ is~ too~ old. \\\\
+    Please~ update~ an~ up-to-date~ version~ of~ the~ bundles \\
+    "l3kernel"~ and~ "l3packages"~ using~ your~ TeX~ package \\
+    manager~ or~ from~ CTAN.
+  }
+%    \end{macrocode}
+%
+% 目前 \cls{fduthesis} 仅支持 \XeTeX{} 和 \LuaTeX{}。
+%    \begin{macrocode}
+\sys_if_engine_xetex:F
+  {
+    \sys_if_engine_luatex:F
+      {
+        \msg_fatal:nnx { fduthesis } { unsupported-engine }
+          { \c_sys_engine_str }
+      }
+  }
+\msg_new:nnn { fduthesis } { unsupported-engine }
+  {
+    The~ fduthesis~ class~ requires~ either~ XeTeX~ or~ LuaTeX. \\\\
+    "#1"~ is~ not~ supported~ at~ present.~ You~ must~ change \\
+    your~ typesetting~ engine~ to~ "xelatex"~ or~ "lualatex".
+  }
+%    \end{macrocode}
+%
+% \subsubsection{内部变量声明}
+%
+% \begin{variable}{\l_@@_tmpa_box,
+%   \l_@@_tmpa_clist,\l_@@_tmpb_clist,
+%   \l_@@_tmpa_dim,\l_@@_tmpb_dim,
+%   \l_@@_tmpa_skip,
+%   \l_@@_tmpa_tl,\l_@@_tmpb_tl}
+% 临时变量。
+%    \begin{macrocode}
+\box_new:N   \l_@@_tmpa_box
+\clist_new:N \l_@@_tmpa_clist
+\clist_new:N \l_@@_tmpb_clist
+\dim_new:N   \l_@@_tmpa_dim
+\dim_new:N   \l_@@_tmpb_dim
+\skip_new:N  \l_@@_tmpa_skip
+\tl_new:N    \l_@@_tmpa_tl
+\tl_new:N    \l_@@_tmpb_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_thesis_type_int}
+% 论文类型。取值 1、2、3 分别对应博士、硕士、本科（学士），这与学号
+% 第三位是一致的。
+%    \begin{macrocode}
+\int_new:N \g_@@_thesis_type_int
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_to_ctexbook_clist,\g_@@_to_hyperref_clist}
+% 分别保存由 \cls{fduthesis} 传入 \cls{ctexbook} 文档类和
+% \pkg{hyperref} 宏包的选项列表。
+%    \begin{macrocode}
+\clist_new:N \g_@@_to_ctexbook_clist
+\clist_new:N \g_@@_to_hyperref_clist
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_twoside_bool}
+% 是否开启双页模式（默认打开）。
+%    \begin{macrocode}
+\bool_new:N \g_@@_twoside_bool
+\bool_set_true:N \g_@@_twoside_bool
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_draft_bool}
+% 是否开启草稿模式。
+%    \begin{macrocode}
+\bool_new:N \g_@@_draft_bool
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_config_tl}
+% 保存配置文件名称。默认为空。
+%    \begin{macrocode}
+\tl_new:N \g_@@_config_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \subsubsection{内部函数}
+%
+% \begin{macro}{\cs_generate_variant:cn,
+%   \file_input:V,
+%   \int_to_arabic:v,
+%   \keys_define:nx,
+%   \tl_map_inline:xn}
+% \begin{macro}[TF]{\tl_if_eq:Vn}
+% \LaTeX3{} 函数变体。
+%    \begin{macrocode}
+\cs_generate_variant:Nn \cs_generate_variant:Nn { cn }
+\cs_generate_variant:Nn \file_input:n           { V  }
+\cs_generate_variant:Nn \int_to_arabic:n        { v  }
+\cs_generate_variant:Nn \keys_define:nn         { nx }
+\cs_generate_variant:Nn \tl_map_inline:nn       { xn }
+\prg_generate_conditional_variant:Nnn \tl_if_eq:nn { Vn } { T, TF }
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\@@_quad:,\@@_qquad:}
+% 等价于 \LaTeXe{} 中的 \tn{quad} 和 \tn{qquad}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_quad:  { \skip_horizontal:n { 1 em } }
+\cs_new:Npn \@@_qquad: { \skip_horizontal:n { 2 em } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_vspace:N,\@@_vspace:n,\@@_vspace:c}
+% 类似 \LaTeXe{} 中的 \tn{vspace*}。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_vspace:N #1
+  {
+    \dim_set_eq:NN \l_@@_tmpa_dim \prevdepth
+    \hrule height \c_zero_dim
+    \nobreak
+    \skip_vertical:N #1
+    \skip_vertical:N \c_zero_skip
+    \dim_set_eq:NN \prevdepth \l_@@_tmpa_dim
+  }
+\cs_new_protected:Npn \@@_vspace:n #1
+  {
+    \skip_set:Nn \l_@@_tmpa_skip {#1}
+    \@@_vspace:N \l_@@_tmpa_skip
+  }
+\cs_generate_variant:Nn \@@_vspace:N { c }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_symbol:n}
+% 等价于 \LaTeXe{} 中的 \tn{symbol}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_symbol:n #1 { \tex_char:D #1 \scan_stop: }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_arabic:n}
+% 等价于 \LaTeXe{} 中的 \tn{arabic}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_arabic:n #1
+  { \int_to_arabic:v { c@ #1 } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_patch_cmd:Nnn,\@@_appto_cmd:Nn}
+% 补丁工具，来自 \pkg{ctexpatch} 宏包。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_patch_cmd:Nnn #1#2#3
+  {
+    \ctex_patch_cmd_once:NnnnTF #1 { } {#2} {#3}
+      { } { \ctex_patch_failure:N #1 }
+  }
+\cs_new_protected:Npn \@@_appto_cmd:Nn #1#2
+  {
+    \ctex_appto_cmd:NnnTF #1 { } {#2}
+      { } { \ctex_patch_failure:N #1 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_define_fn_style:nn,
+%   \@@_define_punct:nn,
+%   \@@_define_sep:nn,
+%   \@@_define_format:nn,
+%   \@@_define_name:nn,
+%   \@@_define_name:nnn}
+% 用来定义脚注样式、标点、默认名称的辅助函数。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_define_fn_style:nn #1#2
+  { \tl_const:cn { c_@@_fn_style_ #1 _tl } {#2} }
+\cs_new_protected:Npn \@@_define_punct:nn #1#2
+  { \tl_const:cn { c_@@_ #1 _tl } { \@@_symbol:n {#2} } }
+% \cs_new_protected:Npn \@@_define_sep:nn #1#2
+%   { \tl_const:cn { c_@@_ #1 _sep_tl } {#2} }
+% \cs_new_protected:Npn \@@_define_format:nn #1#2
+%   { \tl_const:cn { c_@@_ #1 _format_tl } {#2} }
+\cs_new_protected:Npn \@@_define_name:nn #1#2
+  { \tl_const:cn { c_@@_name_ #1 _tl } {#2} }
+\cs_new_protected:Npn \@@_define_name:nnn #1#2#3
+  {
+    \tl_const:cn { c_@@_name_ #1    _tl } {#2}
+    \tl_const:cn { c_@@_name_ #1 _en_tl } {#3}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_msg_new:nn,
+%   \@@_error:n,\@@_error:nn,\@@_error:nx,\@@_error:nnn,
+%   \@@_warning:n,\@@_warning:nn,\@@_warning:nxx,
+%   \@@_info:nx}
+% 各种信息函数的缩略形式。
+%    \begin{macrocode}
+\cs_new:Npn \@@_msg_new:nn  { \msg_new:nnn      { fduthesis } }
+\cs_new:Npn \@@_error:n     { \msg_error:nn     { fduthesis } }
+\cs_new:Npn \@@_error:nn    { \msg_error:nnn    { fduthesis } }
+\cs_new:Npn \@@_error:nx    { \msg_error:nnx    { fduthesis } }
+\cs_new:Npn \@@_error:nnn   { \msg_error:nnnn   { fduthesis } }
+\cs_new:Npn \@@_warning:n   { \msg_warning:nn   { fduthesis } }
+\cs_new:Npn \@@_warning:nn  { \msg_warning:nnn  { fduthesis } }
+\cs_new:Npn \@@_warning:nxx { \msg_warning:nnxx { fduthesis } }
+\cs_new:Npn \@@_info:nx     { \msg_info:nnx     { fduthesis } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{选项处理}
+%
+% 定义 |fdu/option| 键值类。
+%    \begin{macrocode}
+\keys_define:nn { fdu / option }
+  {
+%    \end{macrocode}
+%
+% \changes{v0.7}{2018/02/01}{新增 \opt{type} 选项。}
+%
+% \begin{macro}{type}
+% 设置论文类型。设为模板选项主要是为了以后的兼容性。论文类型可能会
+% 影响很多设置，只是暂时还不考虑。默认为本科毕业论文。
+%    \begin{macrocode}
+    type .choice:,
+    type .value_required:n = true,
+    type .choices:nn = 
+      { doctor, master, bachelor }
+      { \int_set_eq:NN \g_@@_thesis_type_int \l_keys_choice_int },
+    type .initial:n = bachelor,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{oneside,twoside}
+% 设置页面类型为单面或双面。
+%    \begin{macrocode}
+    oneside .value_forbidden:n = true,
+    twoside .value_forbidden:n = true,
+    oneside .code:n =
+      {
+        \clist_gput_right:Nn \g_@@_to_ctexbook_clist { oneside }
+        \bool_set_false:N    \g_@@_twoside_bool
+      },
+    twoside .code:n =
+      {
+        \clist_gput_right:Nn \g_@@_to_ctexbook_clist { twoside }
+        \bool_set_true:N     \g_@@_twoside_bool
+      },
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.5}{2017/09/23}{移除 \opt{nofonts} 选项。}
+%
+% \begin{macro}{draft}
+% 是否开启草稿模式（默认关闭）。
+%    \begin{macrocode}
+    draft .choice:,
+    draft / true  .code:n =
+      {
+        \bool_set_true:N     \g_@@_draft_bool
+        \clist_gput_right:Nn \g_@@_to_ctexbook_clist { draft }
+      },
+    draft / false .code:n =
+      { \bool_set_false:N    \g_@@_draft_bool },
+    draft .default:n = true,
+    draft .initial:n = false,
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.7}{2018/01/31}{新增 \opt{config} 选项。}
+%
+% \begin{macro}{config}
+% 配置文件名。
+%    \begin{macrocode}
+    config .tl_set:N = \g_@@_config_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% 处理未知选项。
+%    \begin{macrocode}
+    unknown .code:n = { \@@_error:n { unknown-option } }
+  }
+\@@_msg_new:nn { unknown-option }
+  { Class~ option~ "\l_keys_key_tl"~ is~ unknown. }
+%    \end{macrocode}
+%
+% 将文档类选项传给 |fdu/option|。
+%    \begin{macrocode}
+\ProcessKeysOptions { fdu / option }
+%    \end{macrocode}
+%
+% 载入参数配置文件。
+%    \begin{macrocode}
+\file_input:n { fduthesis.def }
+\tl_if_empty:NF \g_@@_config_tl
+  {
+    \file_input:V \g_@@_config_tl
+    \@@_info:nx { load-config-file } { \g_@@_config_tl }
+  }
+\@@_msg_new:nn { load-config-file }
+  { You~ are~ loading~ config~ file~ '#1'. }
+%    \end{macrocode}
+%
+% \subsection{载入宏包、文档类}
+%
+% \changes{v0.7}{2018/01/19}{使用 \cls{ctexbook} 文档类，而非直接使用
+%   标准文档类 \cls{book}。}
+%
+% 将选项传入 \cls{ctexbook} 文档类。\\
+%    \begin{macrocode}
+% TODO: (2017/07/22) Chinese fonts in fduthesis-en
+\PassOptionsToClass
+  {
+    UTF8,
+%<class-en>    scheme     = plain,
+    heading    = true,
+%<class>    fontset    = none,
+%<class-en>    fontset    = fandol,
+    zihao      = -4,
+%<class>    linespread = \c_@@_line_spread_fp,
+    \g_@@_to_ctexbook_clist
+  }
+  { ctexbook }
+%    \end{macrocode}
+%
+% 传入各宏包选项。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    { no-math           } { fontspec },
+    { perpage           } { footmisc },
+    { amsmath, thmmarks } { ntheorem }
+  }
+  { \PassOptionsToPackage #1 }
+%    \end{macrocode}
+%
+% 本模板会在 \pkg{ctexhook} 提供的钩子 \cs{ctex_at_end_preamble:n}
+% 中调用 \pkg{biblatex}，而 \pkg{biblatex} 自身又会使用 \pkg{etoolbox}
+% 的钩子 \tn{AtEndPreamble}，因此需要在载入 \cls{ctexbook} 之前调用
+% \pkg{etoolbox}。
+%
+% 钩子的顺序为：$\text{\tn{CTEX@document@left@hook}} \prec
+% \text{\tn{@endpreamblehook}} \prec
+% \text{\texttt{\textbackslash begin\{document\}}}$。
+%    \begin{macrocode}
+\RequirePackage { etoolbox }
+%    \end{macrocode}
+%
+% 载入 \cls{ctexbook} 文档类。
+% 在使用 \XeLaTeX{} 编译时，\cls{ctexbook} 的底层将调用 \pkg{xeCJK}
+% 宏包；而在使用 \LuaLaTeX{} 编译时，则将调用 \pkg{LuaTeX-ja} 宏包。
+% 两种情况下 \cls{ctexbook} 均会调用 \pkg{fontspec} 宏包。
+%    \begin{macrocode}
+\LoadClass { ctexbook }
+%    \end{macrocode}
+%
+% \changes{v0.4}{2017/08/13}{提供彩色支持。}
+%
+% 载入各宏包。其中，\pkg{amsmath} 必须在 \pkg{unicode-math} 之前引入。
+%    \begin{macrocode}
+\RequirePackage
+  {
+    amsmath,
+    unicode-math,
+    geometry,
+    fancyhdr,
+    footmisc,
+    ntheorem,
+    graphicx,
+    longtable,
+    caption,
+    xcolor
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_check_package:nnn}
+% 检查过时宏包。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_check_package:nnn #1#2#3
+  {
+    \@ifpackagelater {#1} {#2}
+      { } { \@@_error:nnn { package-too-old } {#1} {#3} }
+  }
+\@@_msg_new:nn { package-too-old }
+  {
+    Package~ "#1"~ is~ too~ old. \\
+    The~ fduthesis~ class~ only~ supports~ "#1"~ with~ a~ version \\
+    higher~ than~ v#2. \\\\
+    Please~ update~ an~ up-to-date~ version~ of~ it~ using~ your \\
+    TeX~ package~ manager~ or~ from~ CTAN.
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+%    \begin{macrocode}
+\@@_check_package:nnn { ctex         } { 2017/08/07 } { 2.4.10 }
+\@@_check_package:nnn { fontspec     } { 2017/09/22 } { 2.6e   }
+\@@_check_package:nnn { unicode-math } { 2017/11/18 } { 0.8i   }
+\sys_if_engine_xetex:T
+  { \@@_check_package:nnn { xeCJK } { 2017/08/07 } { 3.5.0 } }
+%    \end{macrocode}
+%
+% \subsection{页面布局}
+%
+% 利用 \pkg{geometry} 宏包设置纸张大小、页面边距以及页眉高度。这里，
+% $\SI{2.54}{\centi\meter}=\SI{1}{in}$，
+% $\SI{3.18}{\centi\meter}=\SI{1.25}{in}$。
+%    \begin{macrocode}
+\geometry
+  {
+    paper      = a4paper,
+    vmargin    = 2.54 cm,
+    hmargin    = 3.18 cm,
+    headheight = 15 pt
+  }
+%    \end{macrocode}
+%
+% 草稿模式下显示页面边框及页眉、页脚线 。
+%    \begin{macrocode}
+\bool_if:NT \g_@@_draft_bool { \geometry { showframe } }
+%    \end{macrocode}
+%
+% \subsection{字体}
+%
+% \changes{v0.5}{2017/09/09}{重新实现字体调用。核心内容是分离
+%   字体的声明与设定，并按照宋、黑、仿、楷划分中文字体。}
+%
+% 为了避免不必要的字体调用开销
+% \footnote{事实上，此处的修正对性能的提升并不大。}，
+% 本模板把字体的\emph{声明}与\emph{设定}分离了开来。使用
+% \cs{fdusetup} 设置的字体选项，以及导言区中通过 \cs{setmainfont}、
+% \cs{setCJKmainfont} 等命令设置的字体，均按照字体\emph{声明}处理。
+% 此时，字体名及其选项被存入相关变量中，但不进行实际调用。导言区
+% 末尾，再进行统一调用。本模板将重新定义 \cs{setmainfont}、
+% \cs{setCJKmainfont} 等命令。
+%
+% 对于中文字体，\pkg{ctex} 宏包及其底层 \pkg{xeCJK} 和
+% \pkg{LuaTeX-ja}，均与 \pkg{fontspec} 保持一致，以
+% |main|、|sans|、|mono| 三类进行划分；而本模板则按照
+% 宋、黑、仿、楷等进行划分。为此，需要额外建立二者之间的对应关系。
+%
+% \begin{variable}{\g_@@_font_name_prop,\g_@@_font_options_prop}
+% 存放西文字体名称及选项。
+%    \begin{macrocode}
+\prop_new:N \g_@@_font_name_prop
+\prop_new:N \g_@@_font_options_prop
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\g_@@_cjk_font_name_prop,
+%   \g_@@_cjk_font_options_prop}
+% 存放中文字体及选项。
+%    \begin{macrocode}
+\prop_new:N \g_@@_cjk_font_name_prop
+\prop_new:N \g_@@_cjk_font_options_prop
+%    \end{macrocode}
+% \end{variable}
+%
+% \subsubsection{选项处理}
+%
+% 定义 |fdu/style| 键值类。
+%    \begin{macrocode}
+\keys_define:nn { fdu / style }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{style/font}
+% 预定义西文字体。部分等宽字体（TeX Gyre Cursor）使用
+% \kvopt{Ligatures}{Common\-Off} 选项以禁用连字。
+%    \begin{macrocode}
+    font .choice:,
+    font .value_required:n = true,
+%    \end{macrocode}
+% Libertinus 系列。
+%    \begin{macrocode}
+    font / libertinus .code:n =
+      {
+        \fdu_choose_font:nn { main } { Libertinus~ Serif }
+        \fdu_choose_font:nn { sans } { Libertinus~ Sans  }
+        \fdu_choose_font_with_option:nnn { mono }
+          { TeX~ Gyre~ Cursor } { Ligatures = Common Off }
+        \fdu_choose_font:nn { math } { Libertinus~ Math  }
+        \keys_set:nn { fdu / style } { footnote-style = libertinus }
+      },
+%    \end{macrocode}
+% Latin Modern 系列。
+%    \begin{macrocode}
+    font / lm .code:n =
+      {
+        \fdu_choose_font:nn { main } { Latin~ Modern~ Roman }
+        \fdu_choose_font:nn { sans } { Latin~ Modern~ Sans  }
+        \fdu_choose_font:nn { mono } { Latin~ Modern~ Mono  }
+        \fdu_choose_font:nn { math } { Latin~ Modern~ Math  }
+        \keys_set:nn { fdu / style } { footnote-style = pifont }
+      },
+%    \end{macrocode}
+% Palatino 系列。
+%    \begin{macrocode}
+    font / palatino .code:n =
+      {
+        \fdu_choose_font:nn { main } { TeX~ Gyre~ Pagella }
+        \fdu_choose_font:nn { sans } { TeX~ Gyre~ Heros   }
+        \fdu_choose_font_with_option:nnn { mono }
+          { TeX~ Gyre~ Cursor } { Ligatures = Common Off }
+        \fdu_choose_font:nn { math } { TeX~ Gyre~ Pagella~ Math }
+        \keys_set:nn { fdu / style } { footnote-style = pifont }
+      },
+%    \end{macrocode}
+% \changes{v0.6}{2017/11/11}{额外处理 XITS 字体的小型大写字母。}
+% Times Roman 系列。XITS 字体没有小型大写字母，因此使用普通字体代替。
+%    \begin{macrocode}
+    font / times .code:n =
+      {
+        \fdu_choose_font_with_option:nnn { main } { XITS }
+          {
+            UprightFeatures    = { SmallCapsFont = *               },
+            BoldFeatures       = { SmallCapsFont = *~ Bold         },
+            ItalicFeatures     = { SmallCapsFont = *~ Italic       },
+            BoldItalicFeatures = { SmallCapsFont = *~ Bold~ Italic },
+          }
+        \fdu_choose_font:nn { sans } { TeX~ Gyre~ Heros  }
+        \fdu_choose_font_with_option:nnn { mono }
+          { TeX~ Gyre~ Cursor } { Ligatures = Common Off }
+        \fdu_choose_font:nn { math } { XITS~ Math        }
+        \keys_set:nn { fdu / style } { footnote-style = xits }
+      },
+%    \end{macrocode}
+% \changes{v0.5}{2017/09/23}{新增 \kvopt{font}{none} 选项。}
+% 不设置西文字体。
+%    \begin{macrocode}
+    font / none .code:n =
+      {
+        \@@_initialize_prop:Nn \g_@@_font_name_prop
+          { main, sans, mono, math }
+        \@@_initialize_prop:Nn \g_@@_font_options_prop
+          { main, sans, mono, math }
+        \keys_set:nn { fdu / style } { footnote-style = plain }
+%<*class>
+      },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{style/cjk-font}
+% 预定义中文（CJK）字体。Adobe 和中易系列没有粗宋体。
+%    \begin{macrocode}
+    cjk-font .choice:,
+    cjk-font .value_required:n = true,
+%    \end{macrocode}
+% Adobe 系列。
+%    \begin{macrocode}
+    cjk-font / adobe .code:n =
+      {
+        \fdu_choose_cjk_font:nn { song } { Adobe~ Song~     Std }
+        \fdu_choose_cjk_font:nn { hei  } { Adobe~ Heiti~    Std }
+        \fdu_choose_cjk_font:nn { fang } { Adobe~ Fangsong~ Std }
+        \fdu_choose_cjk_font:nn { kai  } { Adobe~ Kaiti~    Std }
+      },
+%    \end{macrocode}
+% Fandol 系列。
+%    \begin{macrocode}
+    cjk-font / fandol .code:n =
+      {
+        \fdu_choose_cjk_font_with_option:nnn { song }
+          { FandolSong } { BoldFont = FandolSong~ Bold }
+        \fdu_choose_cjk_font:nn { hei  } { FandolHei  }
+        \fdu_choose_cjk_font:nn { fang } { FandolFang }
+        \fdu_choose_cjk_font:nn { kai  } { FandolKai  }
+      },
+%    \end{macrocode}
+% 方正系列。
+%    \begin{macrocode}
+    cjk-font / founder .code:n =
+      {
+        \fdu_choose_cjk_font_with_option:nnn { song }
+          { FZShuSong-Z01 } { BoldFont = FZXiaoBiaoSong-B05 }
+        \fdu_choose_cjk_font:nn { hei  } { FZHei-B01      }
+        \fdu_choose_cjk_font:nn { fang } { FZFangSong-Z02 }
+        \fdu_choose_cjk_font:nn { kai  } { FZKai-Z03      }
+      },
+%    \end{macrocode}
+% Mac （华文）系列。
+%    \begin{macrocode}
+    cjk-font / mac .code:n =
+      {
+        \fdu_choose_cjk_font_with_option:nnn { song }
+          { STSong } { BoldFont = STZhongsong }
+        \fdu_choose_cjk_font:nn { hei  } { STHeiti    }
+        \fdu_choose_cjk_font:nn { fang } { STFangsong }
+        \fdu_choose_cjk_font:nn { kai  } { STKaiti    }
+      },
+%    \end{macrocode}
+% Windows （中易）系列。
+%    \begin{macrocode}
+    cjk-font / windows .code:n =
+      {
+        \fdu_choose_cjk_font:nn { song } { SimSun   }
+        \fdu_choose_cjk_font:nn { hei  } { SimHei   }
+        \fdu_choose_cjk_font:nn { fang } { FangSong }
+        \fdu_choose_cjk_font:nn { kai  } { KaiTi    }
+      },
+%    \end{macrocode}
+% \changes{v0.5}{2017/09/23}{新增 \kvopt{cjk-font}{none} 选项。}
+% 不设置中文字体。
+%    \begin{macrocode}
+    cjk-font / none .code:n =
+      {
+        \@@_initialize_prop:Nn \g_@@_cjk_font_name_prop
+          { rm, sf, tt, kai }
+        \@@_initialize_prop:Nn \g_@@_cjk_font_options_prop
+          { rm, sf, tt, kai }
+%</class>
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_initialize_prop:Nn}
+% 把 |prop-list| 清空，将其并设置为 |main={},| |sans={}| 等。
+% \begin{arguments}
+%   \item |prop-list|
+%   \item {\meta{family 1}, \meta{family 2}, \ldots}，如
+%     |{main,| |sans,| |mono,| |math}|
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_initialize_prop:Nn #1#2
+  {
+    \prop_gclear:N #1
+    \clist_map_inline:nn {#2} { \prop_gput:Nnn #1 {##1} { } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{字体声明}
+%
+% 重定义文档命令，使其只声明字体，而不进行实际调用。
+%
+% \begin{macro}{\setmainfont,\setsansfont,\setmonofont,\setmathfont}
+% 声明西文字体。参数按照 \pkg{fontspec} 的风格，字体选项
+% 在前在后均可。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  { main, sans, mono, math }
+  {
+    \exp_args:Nc \RenewDocumentCommand { set #1 font } { O { } m O { } }
+      { \fdu_choose_font_with_option:nnn { #1 } {##2} { ##1, ##3 } }
+  }
+% \RenewDocumentCommand \setmainfont { O { } m O { } }
+%   { \fdu_choose_font_with_option:nnn { main } {#2} { #1, #3 } }
+% \RenewDocumentCommand \setsansfont { O { } m O { } }
+%   { \fdu_choose_font_with_option:nnn { sans } {#2} { #1, #3 } }
+% \RenewDocumentCommand \setmonofont { O { } m O { } }
+%   { \fdu_choose_font_with_option:nnn { mono } {#2} { #1, #3 } }
+% \RenewDocumentCommand \setmathfont { O { } m O { } }
+%   { \fdu_choose_font_with_option:nnn { math } {#2} { #1, #3 } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\setCJKmainfont,\setCJKsansfont,\setCJKmonofont,
+%   \setCJKfamilyfont}
+% 声明中文字体。参数同样按照 \pkg{fontspec} 的风格
+% \footnote{\pkg{xeCJK} 和 \pkg{ctex} 与之稍有区别，它们要求字体
+% 选项只能位于字体名的\emph{前或后}，而不能同时出现（即不允许形如
+% \cs{setCJKmainfont}\texttt{\oarg{选项 1}\marg{字体}\oarg{选项 2}}
+% 这样的语句）。}。
+%    \begin{macrocode}
+%<*class>
+\RenewDocumentCommand \setCJKmainfont { O { } m O { } }
+  { \fdu_choose_cjk_font_with_option:nnn { rm } {#2} { #1, #3 } }
+\RenewDocumentCommand \setCJKsansfont { O { } m O { } }
+  { \fdu_choose_cjk_font_with_option:nnn { sf } {#2} { #1, #3 } }
+\RenewDocumentCommand \setCJKmonofont { O { } m O { } }
+  { \fdu_choose_cjk_font_with_option:nnn { tt } {#2} { #1, #3 } }
+\RenewDocumentCommand \setCJKfamilyfont { m O { } m O { } }
+  { \fdu_choose_cjk_font_with_option:nnn {#1} {#3} { #2, #4 } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\setCJKsongfont,\setCJKheifont,
+%   \setCJKfangfont,\setCJKkaifont}
+% 声明中文宋、黑、仿、楷字体，暂时不用。
+%    \begin{macrocode}
+% \DeclareDocumentCommand \setCJKsongfont { O { } m O { } }
+%   { \fdu_choose_cjk_font_with_option:nnn { song } {#2} { #1, #3 } }
+% \DeclareDocumentCommand \setCJKheifont  { O { } m O { } }
+%   { \fdu_choose_cjk_font_with_option:nnn { hei  } {#2} { #1, #3 } }
+% \DeclareDocumentCommand \setCJKfangfont { O { } m O { } }
+%   { \fdu_choose_cjk_font_with_option:nnn { fang } {#2} { #1, #3 } }
+% \DeclareDocumentCommand \setCJKkaifont  { O { } m O { } }
+%   { \fdu_choose_cjk_font_with_option:nnn { kai  } {#2} { #1, #3 } }
+%</class>
+%    \end{macrocode}
+% \end{macro}
+%
+% 字体选择只需将字体名及选项存入相应变量即可。
+%
+% \begin{macro}{\fdu_choose_font_with_option:nnn,\fdu_choose_font:nn}
+% 选择西文字体。
+% \begin{arguments}
+%   \item |main| / |sans| / |mono| / |math|
+%   \item 字体名
+%   \item 选项
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \fdu_choose_font_with_option:nnn #1#2#3
+  {
+    \prop_gput:Nnn \g_@@_font_name_prop    {#1} {#2}
+    \prop_gput:Nnn \g_@@_font_options_prop {#1} {#3}
+  }
+\cs_new_protected:Npn \fdu_choose_font:nn #1#2
+  {
+    \prop_gput:Nnn \g_@@_font_name_prop    {#1} {#2}
+    \prop_gput:Nnn \g_@@_font_options_prop {#1} {  }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdu_choose_cjk_font_with_option:nnn,
+%   \fdu_choose_cjk_font:nn}
+% 选择中文字体。
+% \begin{arguments}
+%   \item |rm| / |sf| / |tt| 或 |song| / |hei| / |fang| / |kai|
+%   \item 字体名
+%   \item 选项
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \fdu_choose_cjk_font_with_option:nnn #1#2#3
+  {
+    \prop_gput:Nnn \g_@@_cjk_font_name_prop    {#1} {#2}
+    \prop_gput:Nnn \g_@@_cjk_font_options_prop {#1} {#3}
+  }
+\cs_new_protected:Npn \fdu_choose_cjk_font:nn #1#2
+  {
+    \prop_gput:Nnn \g_@@_cjk_font_name_prop    {#1} {#2}
+    \prop_gput:Nnn \g_@@_cjk_font_options_prop {#1} {  }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{字体设定}
+%
+% 此时需要利用 \pkg{fontspec}、\pkg{unicode-math}、\pkg{xeCJK}、
+% \pkg{ctex} 等宏包完成实际的字体调用。会在导言区末尾统一进行。
+%
+% \begin{macro}{\@@_set_font:}
+% 设定西文字体。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_set_font:
+  {
+    \clist_map_inline:nn { main, sans, mono, math }
+      {
+        \prop_get:NnN \g_@@_font_name_prop    {##1} \l_@@_tmpa_tl
+        \prop_get:NnN \g_@@_font_options_prop {##1} \l_@@_tmpb_tl
+        \tl_if_empty:NT \l_@@_tmpa_tl
+          { \@@_error:nn { font-not-defined } {##1} }
+        \use:c { @@_set_ ##1 _font:VV } \l_@@_tmpa_tl \l_@@_tmpb_tl
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.5}{2017/09/23}{同步 \pkg{fontspec} v2.6e。}
+%
+% \begin{macro}{\@@_set_main_font:nn,
+%   \@@_set_sans_font:nn,
+%   \@@_set_mono_font:nn}
+% 拷贝 \cs{__fontspec_main_setmainfont:nn} 等命令。注意参数顺序
+% 是相反的。
+% \begin{arguments}
+%   \item 字体名
+%   \item 选项
+% \end{arguments}
+%    \begin{macrocode}
+\clist_map_inline:nn { main, sans, mono }
+  {
+    \cs_new_protected:cpx { @@_set_ #1 _font:nn } ##1 ##2
+      { \exp_not:c { __fontspec_main_set #1 font:nn } {##2} {##1} }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.6}{2017/10/11}{同步 \pkg{unicode-math} v0.8h。}
+%
+% \begin{macro}{\@@_set_math_font:nn}
+% 拷贝 \pkg{unicode-math} 中的 \cs{setmathfont} 命令。参数同上。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_set_math_font:nn #1#2
+  { \__um_setmathfont:nn {#2} {#1} }
+%    \end{macrocode}
+% \end{macro}
+%
+% 生成字体设定函数的变体。
+%    \begin{macrocode}
+\clist_map_inline:nn { main, sans, mono, math }
+  { \cs_generate_variant:cn { @@_set_ #1 _font:nn } { VV } }
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_set_cjk_font:}
+% 设定中文字体。复杂之处在于需要建立宋、黑、仿、楷到
+% |rm| / |sf| / |tt| 的映照，如表~\ref{tab:cjk-font} 所示。
+% \begin{table}[ht]
+%   \caption{宋、黑、仿、楷到 \texttt{rm} / \texttt{sf} /
+%     \texttt{tt} 的映照}
+%   \label{tab:cjk-font}
+%   \centering
+%   \begin{tabular}{ccccc}
+%     \toprule
+%        & Normal & Bold & Italic & Bold-italic \\
+%     \midrule
+%       |rm| & 宋体 & [粗宋] /  \textsf{黑体}  & \textit{楷体} & (\textit{粗楷}) \\
+%       |sf| & \textsf{黑体} & (\textsf{粗黑}) & \textsf{黑体} &  \textsf{黑体}  \\
+%       |tt| & \texttt{仿体} & (\texttt{粗仿}) & \textit{楷体} & (\textit{粗楷}) \\
+%     \bottomrule
+%   \end{tabular}
+% \end{table}
+%    \begin{macrocode}
+%<*class>
+\cs_new_protected:Npn \@@_set_cjk_font:
+  {
+    \clist_map_inline:nn { rm, sf, tt, kai }
+      {
+        \use:c { @@_parse_cjk_ ##1 _font: }
+        \@@_check_cjk_font:n   {##1}
+        \@@_set_cjk_font_aux:n {##1}
+      }
+%    \end{macrocode}
+% 清除冗余键值对。
+%    \begin{macrocode}
+    \clist_map_inline:nn { song, hei, fang }
+      {
+        \prop_gremove:Nn \g_@@_cjk_font_name_prop    {##1}
+        \prop_gremove:Nn \g_@@_cjk_font_options_prop {##1}
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_font_name_tl,\l_@@_font_options_clist}
+% 临时存放字体名称和选项。
+%    \begin{macrocode}
+\tl_new:N    \l_@@_font_name_tl
+\clist_new:N \l_@@_font_options_clist
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_parse_cjk_rm_font:}
+% 解析 |rm| 字体族。未设置 |rm| 字体族（即未调用 \cs{setmainfont}）
+% 时，传入 |song| 对应的字体名和选项。|sf| 和 |tt| 字体族的解析
+% 基本类似。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_parse_cjk_rm_font:
+  {
+    \prop_get:NnNF \g_@@_cjk_font_name_prop
+      { rm } \l_@@_font_name_tl
+      {
+        \@@_get_cjk_font_name_options:nn { rm } { song }
+%    \end{macrocode}
+% 根据 \opt{粗宋/黑} 选项来进行操作。目前暂未定义该选项，利用
+% \cs{use_ii:nn} 充当条件判断。使用黑体。
+%    \begin{macrocode}
+        \use_ii:nn
+          {
+%    \end{macrocode}
+% 粗宋。判断是否定义 \opt{BoldFont}，若未定义，则设置 \opt{BoldFont}
+% 为普通宋体。
+%    \begin{macrocode}
+            \tl_if_in:NnF \l_@@_font_options_clist { BoldFont = }
+              {
+                \clist_put_right:Nx \l_@@_font_options_clist
+                  { BoldFont = \l_@@_font_name_tl }
+              }
+          }
+          {
+%    \end{macrocode}
+% 黑体。注意右侧选项会覆盖左侧选项。\\
+%    \begin{macrocode}
+% TODO: (2017/09/18) `hei` or `sans`?
+            \prop_get:NnN \g_@@_cjk_font_name_prop { hei }
+              \l_@@_tmpa_tl
+            \clist_put_right:Nx \l_@@_font_options_clist
+              { BoldFont = \l_@@_tmpa_tl }
+          }
+        \@@_get_cjk_kai_font:
+        \@@_set_cjk_font_options:n { rm }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_parse_cjk_sf_font:}
+% 解析 |sf| 字体族。未设置 |sf| 字体族（即未调用 \cs{setsansfont}）
+% 时，传入 |hei| 对应的字体名和选项。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_parse_cjk_sf_font:
+  {
+    \prop_get:NnNF \g_@@_cjk_font_name_prop
+      { sf } \l_@@_font_name_tl
+      {
+        \@@_get_cjk_font_name_options:nn { sf } { hei }
+%    \end{macrocode}
+% 黑体的 \opt{BoldFont}、\opt{ItalicFont}、\opt{BoldItalicFont}
+% 都使用普通字体。不需要载入楷体。
+%    \begin{macrocode}
+        \clist_put_right:Nx \l_@@_font_options_clist
+          {
+            BoldFont       = \l_@@_font_name_tl,
+            ItalicFont     = \l_@@_font_name_tl,
+            BoldItalicFont = \l_@@_font_name_tl
+          }
+        \@@_set_cjk_font_options:n { sf }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_parse_cjk_tt_font:}
+% 解析 |tt| 字体族。未设置 |tt| 字体族（即未调用 \cs{setmonofont}）
+% 时，传入 |fang| 对应的字体名和选项。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_parse_cjk_tt_font:
+  {
+    \prop_get:NnNF \g_@@_cjk_font_name_prop
+      { tt } \l_@@_font_name_tl
+      {
+        \@@_get_cjk_font_name_options:nn { tt } { fang }
+        \clist_put_right:Nx \l_@@_font_options_clist
+          { BoldFont = \l_@@_font_name_tl }
+        \@@_get_cjk_kai_font:
+        \@@_set_cjk_font_options:n { tt }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_parse_cjk_kai_font:}
+% 解析 |kai| 字体族。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_parse_cjk_kai_font:
+  {
+    \prop_get:NnN \g_@@_cjk_font_name_prop { kai }
+      \l_@@_font_name_tl
+%    \end{macrocode}
+% 与黑体类似，楷体的 \opt{BoldFont}、\opt{ItalicFont}、
+% \opt{BoldItalicFont} 也都使用普通字体。
+%    \begin{macrocode}
+    \clist_set:Nx \l_@@_font_options_clist
+      {
+        BoldFont       = \l_@@_font_name_tl,
+        ItalicFont     = \l_@@_font_name_tl,
+        BoldItalicFont = \l_@@_font_name_tl
+      }
+    \@@_set_cjk_font_options:n { kai }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_cjk_font_name_options:nn}
+% 处理字体名称和选项。字体名存入 \cs{l_@@_font_name_tl}，字体
+% 选项存入 \cs{l_@@_font_options_clist}。注意字体名还被存入了
+% |prop-list| 中（对应的 \meta{key} = |#1|），但选项则在
+% |\__fdu_parse_cjk_..._font:| 的最后才会被存入 |prop-list| 中。
+% 因此还需要有 \cs{@@_set_cjk_font_options:n} 来设置选项。
+% \begin{arguments}
+%   \item |rm| / |sf| / |tt|
+%   \item |song| / |hei| / |fang|
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_get_cjk_font_name_options:nn #1#2
+  {
+    \prop_get:NnN  \g_@@_cjk_font_name_prop    {#2} \l_@@_font_name_tl
+    \prop_gput:NnV \g_@@_cjk_font_name_prop    {#1} \l_@@_font_name_tl
+    \prop_get:NnN  \g_@@_cjk_font_options_prop {#2} \l_@@_tmpa_tl
+    \clist_set:NV  \l_@@_font_options_clist \l_@@_tmpa_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_cjk_kai_font:}
+% 补齐斜体、粗斜体（都设置为楷体）。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_get_cjk_kai_font:
+  {
+    \prop_get:NnN \g_@@_cjk_font_name_prop { kai }
+      \l_@@_tmpa_tl
+    \clist_put_right:Nx \l_@@_font_options_clist
+      {
+        ItalicFont     = \l_@@_tmpa_tl,
+        BoldItalicFont = \l_@@_tmpa_tl
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_cjk_font_options:n}
+%    \begin{macrocode}
+% 设置选项，即把选项存入 |prop-list|，对应 \meta{key} = |#1|。
+% |#1| = |rm| / |sf| / |tt|。
+\cs_new_protected:Npn \@@_set_cjk_font_options:n #1
+  {
+    \prop_put:NnV \g_@@_cjk_font_options_prop {#1}
+      \l_@@_font_options_clist
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_check_cjk_font:n}
+% 检查 CJK 字体族是否已定义。
+% |#1| = |rm| / |sf| / |tt|。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_check_cjk_font:n #1
+  {
+    \prop_get:NnN \g_@@_cjk_font_name_prop {#1}
+      \l_@@_font_name_tl
+    \tl_if_empty:NT \l_@@_font_name_tl
+      { \@@_error:nn { cjk-font-not-defined } {#1} }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\xeCJK_set_family:nVV,\ctex_ltj_set_family:nVV}
+% 生成 \pkg{xeCJK} 和 \pkg{ctex} 中字体族设定函数的变体。
+% 由于 \cs{@@_set_cjk_font_aux:nnnn} 使用了
+% \cs{cs_new_protected:Npx} 定义，因此必须在它之前给出变体形式。
+%    \begin{macrocode}
+\cs_generate_variant:Nn \xeCJK_set_family:nnn    { nVV }
+\cs_generate_variant:Nn \ctex_ltj_set_family:nnn { nVV }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_cjk_font_aux:n}
+% 利用 \pkg{xeCJK} 或 \pkg{ctex-ltj} 调用字体，需按照引擎的不同
+% 分别处理。使用 |Npx| 型来定义是为了在定义时直接确定引擎，以避开
+% 调用时的判断。
+% |#1| = |rm| / |sf| / |tt|。
+%    \begin{macrocode}
+\cs_new_protected:Npx \@@_set_cjk_font_aux:n #1
+  {
+    \prop_get:NnN \exp_not:N \g_@@_cjk_font_name_prop    {#1}
+      \exp_not:N \l_@@_tmpa_tl
+    \prop_get:NnN \exp_not:N \g_@@_cjk_font_options_prop {#1}
+      \exp_not:N \l_@@_tmpb_tl
+    \sys_if_engine_xetex:TF
+      { \xeCJK_set_family:nVV }
+      { \sys_if_engine_luatex:T { \ctex_ltj_set_family:nVV } }
+    {#1} \exp_not:n { \l_@@_tmpb_tl \l_@@_tmpa_tl }
+  }
+%</class>
+%    \end{macrocode}
+% \end{macro}
+%
+% 字体族未定义信息。
+%    \begin{macrocode}
+\@@_msg_new:nn { font-not-defined }
+  {
+    \str_upper_case:f { \tl_head:n {#1} } \tl_tail:n {#1} ~
+    font~ is~ not~ defined. \\\\
+    You~ can~ set~ option~ "font"~ via~ "\string\fdusetup",~
+    or~ use~ command~ \\
+    "\string\set #1 font"~ to~ define~ new~ font~ families.
+  }
+%<*class>
+\@@_msg_new:nn { cjk-font-not-defined }
+  {
+    CJK~ font~ family~ "#1"~ is~ not~ defined. \\\\
+    You~ can~ set~ option~ "cjk-font"~ via~ "\string\fdusetup",~
+    or~ use~ commands~ \\
+    "\string\setCJKmainfont",~ "\string\setCJKsansfont"~ or~
+    "\string\setCJKmonofont",~ etc~ \\
+    to~ define~ new~ CJK~ font~ families.
+  }
+%    \end{macrocode}
+%
+%    \begin{macrocode}
+\sys_if_engine_xetex:T
+  {
+%    \end{macrocode}
+% 这里给这两个 |prop-list| 变量赋一个空值，使得 \pkg{xeCJK} 认为
+% |rm| 字体族已定义，从而避免警告。\LuaTeX{} 引擎下，
+% \pkg{ctex-ltj} 不会给出警告，暂且不管。
+%    \begin{macrocode}
+    \prop_gput:Nnn \g__xeCJK_family_font_name_prop { rm } { }
+    \prop_gput:Nnn \g__xeCJK_family_name_prop      { rm } { }
+%    \end{macrocode}
+% 关闭 \pkg{xeCJK} 中重定义字体族的警告。
+%    \begin{macrocode}
+    \msg_redirect_name:nnn { xeCJK } { CJKfamily-redef } { none }
+  }
+%</class>
+%    \end{macrocode}
+%
+% 在导言区末尾载入字体。
+%    \begin{macrocode}
+\ctex_at_end_preamble:n
+  {
+    \@@_set_font:
+%<class>    \@@_set_cjk_font:
+  }
+%    \end{macrocode}
+%
+% \subsubsection{字体切换（楷体）}
+%
+% 一般情况下，楷体被用作中文斜体。但有时需要保持西文部分不被倾斜，
+% 因此需要额外定义楷体切换命令。
+%
+% \begin{macro}[TF]{\fdu_family_if_exist:n}
+% \changes{v0.4}{2017/08/10}{修复 \LuaTeX{} 下的展开错误。}
+% 判断字体族是否存在。
+% \XeTeX{} 引擎下直接利用 \pkg{xeCJK} 宏包提供的函数。
+%    \begin{macrocode}
+%<*class>
+\sys_if_engine_xetex:TF
+  {
+    \prg_new_protected_conditional:Npnn
+      \fdu_family_if_exist:n #1 { TF }
+      {
+        \xeCJK_family_if_exist:nTF {#1}
+          { \prg_return_true: } { \prg_return_false: }
+      }
+  }
+  {
+%    \end{macrocode}
+% \LuaTeX{} 引擎下需要利用 \pkg{ctex} 宏包提供的函数。这两个函数
+% 的参数略有不同。
+%    \begin{macrocode}
+    \sys_if_engine_luatex:T
+      {
+        \prg_new_protected_conditional:Npnn
+          \fdu_family_if_exist:n #1 { TF }
+          {
+            \ctex_ltj_family_if_exist:nNTF {#1} \l_@@_tmpa_tl
+              { \prg_return_true: } { \prg_return_false: }
+          }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdu_cjk_font_kai:}
+% 楷体切换命令。
+%    \begin{macrocode}
+\cs_new_protected:Npx \fdu_cjk_font_kai:
+  {
+    \fdu_family_if_exist:nTF { kai }
+      {
+        \sys_if_engine_xetex:TF
+          { \xeCJK_switch_family:n { kai } }
+          {
+            \sys_if_engine_luatex:T
+              { \ctex_ltj_switch_family:n { kai } }
+          }
+      }
+      { \exp_not:n { \rmfamily \itshape } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\fdu@kai}
+% 命令 \cs{fdu_cjk_font_kai:} 采用 \LaTeX3 风格，在 \file{.toc}
+% 文件里无法正常使用，因此重新定义为 \LaTeXe{} 风格的命令。
+%    \begin{macrocode}
+\cs_new_eq:NN \fdu@kai \fdu_cjk_font_kai:
+%</class>
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{数学字体设置}
+%
+% 根据 GB 3102.11--93 以及 ISO 80000-2:2009 的规定，数学表达式中
+% 表示变量的拉丁字母和希腊字母均应当使用斜体。
+% 这里的 |\keys_set:nn{unicode-math}| 实际相当于 \cs{unimathsetup}。\\
+%    \begin{macrocode}
+% TODO: (2018/01/19) do we need `mathrm=sym`?
+\keys_set:nn { unicode-math }
+  {
+    math-style = ISO,
+    bold-style = ISO,
+%   mathrm     = sym
+  }
+%    \end{macrocode}
+%
+% \subsubsection{字号}
+%
+%    \begin{macrocode}
+\keys_define:nn { fdu / style }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{style/font-size}
+% |font-size| 不是文档类选项，不能传给 \cls{ctexbook} 文档类，因此
+% 只能手动重定义字号命令。
+%    \begin{macrocode}
+    font-size .choice:,
+    font-size .value_required:n = true,
+    font-size / -4 .code:n = { },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\tiny,\scriptsize,\footnotesize,\small,
+%   \normalsize,\large,\Large,\LARGE,\huge,\Huge}
+% 默认使用小四号字，所以只有五号字需要重新设置。
+%    \begin{macrocode}
+    font-size /  5 .code:n =
+      {
+        \RenewDocumentCommand \tiny         { } { \zihao {  7 } }
+        \RenewDocumentCommand \scriptsize   { } { \zihao { -6 } }
+        \RenewDocumentCommand \footnotesize { } { \zihao {  6 } }
+        \RenewDocumentCommand \small        { } { \zihao { -5 } }
+        \RenewDocumentCommand \normalsize   { } { \zihao {  5 } }
+        \RenewDocumentCommand \large        { } { \zihao { -4 } }
+        \RenewDocumentCommand \Large        { } { \zihao { -3 } }
+        \RenewDocumentCommand \LARGE        { } { \zihao { -2 } }
+        \RenewDocumentCommand \huge         { } { \zihao {  2 } }
+        \RenewDocumentCommand \Huge         { } { \zihao {  1 } }
+%<class-en>      }
+%<class-en>  }
+%<*class>
+      },
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{句号}
+%
+% \begin{macro}{style/fullwidth-stop}
+% \changes{v0.6}{2017/10/14}{支持类别码和 TECKit 映射两种机制。}
+% 设置句号形状（圆圈或是圆点）。
+%    \begin{macrocode}
+    fullwidth-stop .choice:,
+    fullwidth-stop .value_required:n = true,
+%    \end{macrocode}
+% 利用类别码机制切换，只有显式的\FSID 会被替换。
+%    \begin{macrocode}
+    fullwidth-stop / catcode .code:n =
+      { \@@_set_fullwidth_stop_catcode: },
+%    \end{macrocode}
+% 利用 TECKit 映射机制切换，相当于设置了 \tn{defaultCJKfontfeatures}
+% |{|\kvopt{Map\-ping}{fullwidth-stop}|}|。这种手段会
+% 替换所有出现的\FSID，并且将影响所有字体。只在 \XeTeX{}
+% 下可用。
+%    \begin{macrocode}
+    fullwidth-stop / mapping .code:n =
+      {
+        \sys_if_engine_xetex:TF
+          {
+            \clist_gset:Nn \g__xeCJK_default_features_clist
+              { Mapping = fullwidth-stop }
+          }
+          {
+%    \end{macrocode}
+% \LuaTeX{} 下改用类别码机制代替，并给出警告。
+%    \begin{macrocode}
+            \sys_if_engine_luatex:T
+              {
+                \@@_warning:n { mapping-not-available }
+                \@@_set_fullwidth_stop_catcode:
+              }
+          }
+      },
+    fullwidth-stop / false .code:n = { }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 提示信息。
+%    \begin{macrocode}
+\@@_msg_new:nn { mapping-not-available }
+  {
+    Option~ "fullwidth-stop = mapping"~ is~ not~ available~ in~ LuaTeX. \\
+    "fullwidth-stop = catcode"~ will~ be~ set~ instead.
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_set_fullwidth_stop_catcode:}
+% 将\FSID 设置为活动符，并定义为句点\FSFW。
+%    \begin{macrocode}
+\cs_new:Npn \@@_set_fullwidth_stop_catcode:
+  {
+    \char_set_active_eq:nN { "3002 } \c_@@_fullwidth_full_stop_tl
+    \char_set_catcode_active:n { "3002 }
+  }
+%</class>
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.6}{2017/10/28}{优化 \LuaTeX{} 下希腊字母、西里尔字母
+%   和带圈数字的显示（\pkg{ctex} v2.4.11 已默认进行处理）。}
+%
+% \subsection{章节标题结构}
+%
+% |\keys_set:nn{ctex}| 实际相当于 \cs{ctexset}。
+%    \begin{macrocode}
+\keys_set:nn { ctex }
+  {
+%    \end{macrocode}
+%
+% 设置章（chapter）、节（section）与小节（sub-section）标题样式。
+% 此处使用 \kvopt{fixskip}{true} 选项来抑制前后的多余间距。
+%    \begin{macrocode}
+    chapter =
+      {
+%<class>        format      = \huge \normalfont \sffamily \centering,
+%<*class-en>
+        format      = \centering,
+        nameformat  = \LARGE \bfseries,
+        titleformat = \huge \bfseries,
+        aftername   = \par \nobreak \vskip 10 pt,
+%</class-en>
+        beforeskip  = 50 pt,
+        afterskip   = 40 pt,
+        number      = \@@_arabic:n { chapter },
+        fixskip     = true
+      },
+    section =
+      {
+%<class>        format      = \Large \normalfont \sffamily \raggedright,
+%<class-en>        format      = \Large \bfseries \raggedright,
+        beforeskip  = 3.5 ex plus 1.0 ex minus 0.2 ex,
+        afterskip   = 2.7 ex plus 0.5 ex,
+        fixskip     = true
+      },
+    subsection =
+      {
+%<class>        format      = \large \normalfont \sffamily \raggedright,
+%<class-en>        format      = \large \bfseries \raggedright,
+        beforeskip  = 3.25 ex plus 1.0 ex minus 0.2 ex,
+        afterskip   = 2.5  ex plus 0.3 ex,
+        fixskip     = true
+      }
+  }
+%    \end{macrocode}
+%
+% \subsection{页眉页脚}
+%
+% 清除默认页眉页脚格式。
+%    \begin{macrocode}
+\fancyhf { }
+%    \end{macrocode}
+%
+% \begin{variable}{\l_@@_header_center_mark_tl}
+% 保存中间页眉的文字。正文中设置为空，目录、摘要、符号表等设置为
+% 相应标题。
+%    \begin{macrocode}
+\tl_new:N \l_@@_header_center_mark_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% 构建页眉，要在单面或双面下分别设置。
+%
+% \cs{fancyhead} 的选项中，\opt{E} 和 \opt{O} 分别表示偶数（even）
+% 和奇数（odd）， 而 \opt{L}、\opt{R} 和 \opt{C} 则分别表示左
+% （left）、右（right）和中间（center）。按照通常的排版规则，
+% 在双面模式下，偶数页的中间页眉文字在左，奇数页则在右。单面模式下，
+% 左右页眉都要显示。
+%    \begin{macrocode}
+\bool_if:NTF \g_@@_twoside_bool
+%<*class>
+  {
+    \fancyhead [ EL ] { \small \nouppercase { \fdu@kai \leftmark  } }
+    \fancyhead [ OR ] { \small \nouppercase { \fdu@kai \rightmark } }
+  }
+  {
+    \fancyhead [ L ] { \small \nouppercase { \fdu@kai \leftmark  } }
+    \fancyhead [ R ] { \small \nouppercase { \fdu@kai \rightmark } }
+    \fancyhead [ C ]
+      {
+        \small \nouppercase
+          { \fdu@kai \l_@@_header_center_mark_tl }
+      }
+  }
+%</class>
+%<*class-en>
+  {
+    \fancyhead [ EL ] { \small \nouppercase { \itshape \leftmark  } }
+    \fancyhead [ OR ] { \small \nouppercase { \itshape \rightmark } }
+  }
+  {
+    \fancyhead [ L ] { \small \nouppercase { \itshape \leftmark  } }
+    \fancyhead [ R ] { \small \nouppercase { \itshape \rightmark } }
+    \fancyhead [ C ]
+      {
+        \small \nouppercase
+          { \itshape \l_@@_header_center_mark_tl }
+      }
+  }
+%</class-en>
+%    \end{macrocode}
+%
+% 构建页脚，用来显示页码。选项 \opt{C} 表示居中（center）。
+%    \begin{macrocode}
+\fancyfoot [ C ] { \small \thepage }
+%    \end{macrocode}
+%
+% 关闭横线显示（未启用）。
+%    \begin{macrocode}
+% \RenewDocumentCommand \headrulewidth { } { 0 pt }
+%    \end{macrocode}
+%
+% \begin{macro}{\fdu_front_matter_header:n}
+% 在单页模式下，设置前导部分（包括目录、摘要、符号表等）的页眉中间
+% 为相应标题，左右为空。
+%    \begin{macrocode}
+\cs_new:Npn \fdu_front_matter_header:n #1
+  {
+    \bool_if:NTF \g_@@_twoside_bool
+      { \markboth {#1} {#1} }
+      {
+        \markboth { } { }
+        \tl_gset:Nn \l_@@_header_center_mark_tl {#1}
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\cleardoublepage}
+% 重定义 \tn{cleardoublepage}，使得偶数页面在没有内容时也不显示
+% 页眉页脚。\\
+% 见 http://tex.stackexchange.com/q/1681 \\
+% 最后清空中间页眉，确保正文部分页眉显示正确。
+%    \begin{macrocode}
+\RenewDocumentCommand \cleardoublepage { }
+  {
+    \clearpage
+    \bool_if:NT \g_@@_twoside_bool
+      {
+        \int_if_odd:nF \c@page
+          { \hbox:n { } \thispagestyle { empty } \newpage }
+      }
+    \tl_gset:Nn \l_@@_header_center_mark_tl { }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \pkg{ctex} 宏包使用 \opt{heading} 选项后，会把页面格式设置为
+% |headings|。因此必须在 \pkg{ctex} 调用之后重新设置 \cs{pagestyle}
+% 为 |fancy|。
+%    \begin{macrocode}
+\pagestyle { fancy }
+%    \end{macrocode}
+%
+% \subsection{脚注}
+%
+% \changes{v0.3}{2017/02/21}{支持脚注。}
+%
+% \subsubsection{编号样式}
+%
+% 各种脚注编号样式的名称。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    { plain           } { plain           },
+    { libertinus      } { libertinus      },
+    { libertinus_neg  } { libertinus*     },
+    { libertinus_sans } { libertinus-sans },
+    { pifont          } { pifont          },
+    { pifont_neg      } { pifont*         },
+    { pifont_sans     } { pifont-sans     },
+    { pifont_sans_neg } { pifont-sans*    },
+    { xits            } { xits            },
+    { xits_sans       } { xits-sans       },
+    { xits_sans_neg   } { xits-sans*      }
+  }
+  { \@@_define_fn_style:nn #1 }
+%    \end{macrocode}
+%
+% \begin{variable}{\l_@@_fn_style_tl}
+% 保存当前使用的脚注编号样式。
+%    \begin{macrocode}
+\tl_new:N \l_@@_fn_style_tl
+%    \end{macrocode}
+% \end{variable}
+%
+%    \begin{macrocode}
+\keys_define:nn { fdu / style }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{style/footnote-style}
+% 脚注类型共分四大类：
+% \begin{itemize}
+%   \item \opt{plain}：使用当前字体；
+%   \item \opt{libertinus}：取自 Libertinus Serif 和 Libertinus Sans
+%     字体；
+%   \item \opt{pifont}：使用 \pkg{pifont} 宏包；
+%   \item \opt{xits}：取自 XITS 字体。
+% \end{itemize}
+% 不带任何修饰的为衬线阳文符号，带“|sans|”的为无衬线符号，带“|*|”的
+% 为阴文版本。
+%    \begin{macrocode}
+    footnote-style .choices:nn =
+      {
+        plain,
+        libertinus, libertinus*, libertinus-sans,
+        pifont,     pifont*,     pifont-sans,     pifont-sans*,
+        xits,                    xits-sans,       xits-sans*
+      }
+%    \end{macrocode}
+% \changes{v0.6}{2017/11/12}{不再依赖 XITS-Math 字体。}
+% 若使用 \opt{pifont} 类型，则需引入 \pkg{pifont} 宏包。
+%    \begin{macrocode}
+      {
+        \tl_gset_eq:NN \l_@@_fn_style_tl \l_keys_choice_tl
+        \int_compare:nT { 5 <= \l_keys_choice_int <= 8 }
+          { \RequirePackage { pifont } }
+      },
+    footnote-style .value_required:n = true
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_libertinus:n}
+% \opt{libertinus} 普通版。\numrange{1}{20} 为数字，\numrange{21}{46}
+% 为小写英文字母，\numrange{47}{72} 为大写英文字母。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_libertinus:n #1
+  {
+    \int_compare:nTF { #1 >= 21 }
+      {
+        \int_compare:nTF { #1 >= 47 }
+          { \@@_symbol:n { \int_eval:n { "24B6 - 47 + #1 } } }
+          { \@@_symbol:n { \int_eval:n { "24D0 - 21 + #1 } } }
+      }
+      { \@@_symbol:n { \int_eval:n { "2460 - 1 + #1 } } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_libertinus_neg:n}
+% \opt{libertinus} 阴文衬线版。只含 \numrange{1}{20}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_libertinus_neg:n #1
+  {
+    \int_compare:nTF { #1 >= 11 }
+      { \@@_symbol:n { \int_eval:n { "24EB - 11 + #1 } } }
+      { \@@_symbol:n { \int_eval:n { "2776 -  1 + #1 } } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_libertinus_sans:n}
+% \opt{libertinus} 阳文无衬线版。符号排列与普通版相同。
+%    \begin{macrocode}
+\cs_new_eq:NN \@@_fn_symbol_libertinus_sans:n
+  \@@_fn_symbol_libertinus:n
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_pifont:n}
+% \opt{pifont} 普通版。以下四种都只包含 \numrange{1}{10}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_pifont:n #1
+  { \ding { \int_eval:n { 171 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_pifont_neg:n}
+% \opt{pifont} 阴文衬线版。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_pifont_neg:n #1
+  { \ding { \int_eval:n { 181 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_pifont_sans:n}
+% \opt{pifont} 阳文无衬线版。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_pifont_sans:n #1
+  { \ding { \int_eval:n { 191 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_pifont_sans_neg:n}
+% \opt{pifont} 阴文无衬线版。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_pifont_sans_neg:n #1
+  { \ding { \int_eval:n { 201 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_xits:n}
+% \opt{xits} 普通版。\numrange{1}{9} 为数字，\numrange{10}{35}
+% 为小写英文字母，\numrange{36}{61} 为大写英文字母。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_xits:n #1
+  {
+    \int_compare:nTF { #1 >= 10 }
+      {
+        \int_compare:nTF { #1 >= 36 }
+          { \@@_symbol:n { \int_eval:n { "24B6 - 36 + #1 } } }
+          { \@@_symbol:n { \int_eval:n { "24D0 - 10 + #1 } } }
+      }
+      { \@@_symbol:n { \int_eval:n { "2460 - 1 + #1 } } }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_xits_sans:n}
+% \opt{xits} 阳文无衬线版。只包含 \numrange{1}{10}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_xits_sans:n #1
+  { \@@_symbol:n { \int_eval:n { "2780 - 1 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fn_symbol_xits_sans_neg:n}
+% \opt{xits} 阴文无衬线版。也只包含 \numrange{1}{10}。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fn_symbol_xits_sans_neg:n #1
+  { \@@_symbol:n { \int_eval:n { "278A - 1 + #1 } } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\thefootnote}
+% \changes{v0.7}{2018/01/17}{改为可完全展开的命令。}
+% 重定义脚注编号。
+%    \begin{macrocode}
+\cs_set:Npn \thefootnote { \fdu_footnote_number:N \c@footnote }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdu_footnote_number:N}
+% 脚注编号样式。
+%    \begin{macrocode}
+\cs_new:Npn \fdu_footnote_number:N #1
+  {
+    \tl_case:NnF \l_@@_fn_style_tl
+      {
+%    \end{macrocode}
+% \opt{plain} 类型直接使用计数器 |footnote| 的值。
+%    \begin{macrocode}
+        \c_@@_fn_style_plain_tl
+          { \int_use:N #1 }
+%    \end{macrocode}
+% \opt{libertinus} 类型需要使用 Libertinus Serif 或
+% Libertinus Sans 字体。
+%    \begin{macrocode}
+        \c_@@_fn_style_libertinus_tl
+          {
+            \fontspec { Libertinus~ Serif }
+            \@@_fn_symbol_libertinus:n {#1}
+          }
+        \c_@@_fn_style_libertinus_neg_tl
+          {
+            \fontspec { Libertinus~ Serif }
+            \@@_fn_symbol_libertinus_neg:n {#1}
+          }
+        \c_@@_fn_style_libertinus_sans_tl
+          {
+            \fontspec { Libertinus~ Sans }
+            \@@_fn_symbol_libertinus_sans:n {#1}
+          }
+%    \end{macrocode}
+% \opt{pifont} 类型无需进行额外的操作。
+%    \begin{macrocode}
+        \c_@@_fn_style_pifont_tl
+          { \@@_fn_symbol_pifont:n {#1} }
+        \c_@@_fn_style_pifont_neg_tl
+          { \@@_fn_symbol_pifont_neg:n {#1} }
+        \c_@@_fn_style_pifont_sans_tl
+          { \@@_fn_symbol_pifont_sans:n {#1} }
+        \c_@@_fn_style_pifont_sans_neg_tl
+          { \@@_fn_symbol_pifont_sans_neg:n {#1} }
+%    \end{macrocode}
+% \opt{xits} 类型需要临时切换数学字体。
+%    \begin{macrocode}
+        \c_@@_fn_style_xits_tl
+          {
+            \fontspec { XITS }
+            \@@_fn_symbol_xits:n {#1}
+          }
+        \c_@@_fn_style_xits_sans_tl
+          {
+            \fontspec { XITS }
+            \@@_fn_symbol_xits_sans:n {#1}
+          }
+        \c_@@_fn_style_xits_sans_neg_tl
+          {
+            \fontspec { XITS }
+            \@@_fn_symbol_xits_sans_neg:n {#1}
+          }
+      }
+%    \end{macrocode}
+% 变量 \cs{l_@@_fn_style_tl} 保存的类型未知时，默认使用 \opt{plain}
+% 类型。
+%    \begin{macrocode}
+      { \int_use:N #1 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{整体样式}
+%
+% \begin{macro}[int]{\@makefntext}
+% \changes{v0.7}{2018/01/18}{简化实现，兼容 \pkg{fancyvrb} 宏包。
+%   不再使用悬挂缩进。}
+% 重定义内部脚注文字命令，使脚注编号不使用上标，宽度为 \SI{1.5}{em}。
+% 见 \url{http://tex.stackexchange.com/q/19844} 和
+% \url{https://www.zhihu.com/question/53030087}。
+%    \begin{macrocode}
+\cs_set:Npn \@makefntext #1
+  {
+    \mode_leave_vertical:
+    \hbox_to_wd:nn { 1.5 em } { \@thefnmark \hfil }
+    #1
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{定理环境}
+%
+% \changes{v0.3}{2017/05/07}{新增定理环境。}
+%
+% \begin{variable}{\c_@@_thm_style_plain_clist,
+%   \c_@@_thm_style_break_clist}
+% 保存 \opt{plain}、\opt{break} 两种类型的定理样式名称。
+%    \begin{macrocode}
+\clist_const:Nn \c_@@_thm_style_plain_clist
+  { plain, margin, change }
+\clist_const:Nn \c_@@_thm_style_break_clist
+  { break, marginbreak, changebreak }
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_thm_style_tl,
+%   \l_@@_thm_header_font_tl,
+%   \l_@@_thm_body_font_tl,
+%   \l_@@_thm_qed_tl,
+%   \l_@@_thm_counter_tl}
+% 定理所需的一些字段。
+%    \begin{macrocode}
+\tl_new:N \l_@@_thm_style_tl
+\tl_new:N \l_@@_thm_header_font_tl
+\tl_new:N \l_@@_thm_body_font_tl
+\tl_new:N \l_@@_thm_qed_tl
+\tl_new:N \l_@@_thm_counter_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{theorem/style,
+%   theorem/header-font,
+%   theorem/body-font,
+%   theorem/qed,
+%   theorem/counter}
+% 定义 |fdu/theorem| 键值类。
+%    \begin{macrocode}
+\keys_define:nn { fdu / theorem }
+  {
+    style       .tl_set:N  = \l_@@_thm_style_tl,
+    header-font .tl_set:N  = \l_@@_thm_header_font_tl,
+    body-font   .tl_set:N  = \l_@@_thm_body_font_tl,
+    qed         .tl_set:N  = \l_@@_thm_qed_tl,
+    counter     .tl_set:N  = \l_@@_thm_counter_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_thm_ntheorem_style:n,\@@_thm_ntheorem_new:w}
+% 拷贝 \pkg{ntheorem} 命令。
+%    \begin{macrocode}
+\cs_new_eq:NN \@@_thm_ntheorem_style:n \theoremstyle
+\cs_new_eq:NN \@@_thm_ntheorem_new:w   \newtheorem
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.7}{2017/12/12}{原 \cs{fdunewtheorem} 命令更名为
+%   \cs{new\-the\-orem}。}
+%
+% \begin{macro}{\newtheorem}
+% 定义新的定理环境。
+%    \begin{macrocode}
+\RenewDocumentCommand \newtheorem { s o m m }
+  {
+%    \end{macrocode}
+% 默认情况下，由 \cs{newtheorem*} 创建的定理其证毕符号为 \cs{QED}，
+% 而由 \cs{new\-the\-orem} 创建的则不带证毕符号。符号 \cs{QED} 由
+% \pkg{unicode-math} 宏包提供。
+%    \begin{macrocode}
+    \IfBooleanTF {#1}
+      { \tl_set:Nn \l_@@_thm_qed_tl { \ensuremath { \QED } } }
+      { \tl_set:Nn \l_@@_thm_qed_tl { } }
+%    \end{macrocode}
+% 设置默认样式为 \opt{plain}。
+%    \begin{macrocode}
+% TODO: (2017/12/07) move to interface
+    \tl_set:Nn \l_@@_thm_style_tl { plain }
+%    \end{macrocode}
+% 处理可选参数。利用 |fdu/theorem| 键值对设置，并按此修改证毕符号、
+% 定理头字体和定理正文字体。
+%    \begin{macrocode}
+    \IfValueT {#2} { \keys_set:nn { fdu / theorem } {#2} }
+    \fdu_thm_set_header_font:V \l_@@_thm_header_font_tl
+    \fdu_thm_set_body_font:V   \l_@@_thm_body_font_tl
+    \fdu_thm_set_qed:V         \l_@@_thm_qed_tl
+%    \end{macrocode}
+% \cs{newtheorem} 负责创建编号定理，而 \cs{newtheorem*}
+% 则负责创建无编号定理。以下分这两种情况处理。
+%    \begin{macrocode}
+    \IfBooleanTF {#1}
+      {
+%    \end{macrocode}
+% 带 |*| 的版本原则上只接受 \opt{plain} 和 \opt{break} 两种样式，
+% 其余样式将被转换成这两者其中之一。
+%    \begin{macrocode}
+        \clist_if_in:nVF { plain, break } \l_@@_thm_style_tl
+          {
+            \clist_if_in:NVTF
+              \c_@@_thm_style_plain_clist \l_@@_thm_style_tl
+              { \@@_thm_redefine_style:n { plain } }
+              {
+                \clist_if_in:NVTF
+                  \c_@@_thm_style_break_clist \l_@@_thm_style_tl
+                  { \@@_thm_redefine_style:n { break } }
+                  {
+                    \@@_error:nx { unknown-theorem-style }
+                      { \l_@@_thm_style_tl }
+                  }
+              }
+          }
+%    \end{macrocode}
+% \pkg{ntheorem} 宏包提供的无编号定理带有 |nonumber| 前缀，
+% 这里将其加上。
+%    \begin{macrocode}
+        \tl_put_left:Nn \l_@@_thm_style_tl { nonumber }
+        \fdu_thm_new_no_number:Vxx \l_@@_thm_style_tl {#3} {#4}
+      }
+      {
+%    \end{macrocode}
+% 不带 |*| 的版本支持不含“|nonumber|”的所有定理样式。
+%    \begin{macrocode}
+        \clist_clear:N \l_@@_tmpa_clist
+        \clist_concat:NNN \l_@@_tmpa_clist
+          \c_@@_thm_style_plain_clist \c_@@_thm_style_break_clist
+        \clist_if_in:NVF \l_@@_tmpa_clist \l_@@_thm_style_tl
+          {
+            \@@_error:nx { unknown-theorem-style }
+              { \l_@@_thm_style_tl }
+          }
+        \fdu_thm_new:VVxx \l_@@_thm_style_tl \l_@@_thm_counter_tl
+          {#3} {#4}
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_thm_redefine_style:n}
+% 重定义定理样式，并给出警告。
+%    \begin{macrocode}
+\cs_new:Npn \@@_thm_redefine_style:n #1
+  {
+    \@@_warning:nxx { redefine-theorem-style }
+      {#1} { \l_@@_thm_style_tl }
+    \tl_set:Nn \l_@@_thm_style_tl {#1}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 提示信息。
+%    \begin{macrocode}
+\@@_msg_new:nn { redefine-theorem-style }
+  { Theorem~ style~ "#2"~ will~ be~ redefined~ as~ "#1". }
+\@@_msg_new:nn { unknown-theorem-style }
+  { Theorem~ style~ "#1"~ is~ unknown. }
+%    \end{macrocode}
+%
+% \begin{macro}{\fdu_thm_new:nnnn,\fdu_thm_new:VVxx}
+% 带编号的定理环境。
+% \begin{arguments}
+%   \item 样式
+%   \item 计数器
+%   \item 定理环境名称
+%   \item 定理头文字
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new:Npn \fdu_thm_new:nnnn #1#2#3#4
+  {
+    \@@_thm_ntheorem_style:n {#1}
+    \@@_thm_ntheorem_new:w   {#3} {#4} [#2]
+  }
+\cs_generate_variant:Nn \fdu_thm_new:nnnn { VVxx }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdu_thm_new_no_number:nnn,
+%   \fdu_thm_new_no_number:Vxx}
+% 不带编号的定理环境。
+% \begin{arguments}
+%   \item 样式
+%   \item 定理环境名称
+%   \item 定理头文字
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new:Npn \fdu_thm_new_no_number:nnn #1#2#3
+  {
+    \@@_thm_ntheorem_style:n {#1}
+    \@@_thm_ntheorem_new:w   {#2} {#3}
+  }
+\cs_generate_variant:Nn \fdu_thm_new_no_number:nnn { Vxx }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\fdu_thm_set_qed:n,
+%   \fdu_thm_set_header_font:n,
+%   \fdu_thm_set_body_font:n,
+%   \fdu_thm_set_qed:V,
+%   \fdu_thm_set_header_font:V,
+%   \fdu_thm_set_body_font:V}
+% 封装 \pkg{ntheorem} 宏包提供的若干命令，分别用以设置证毕符号、
+% 定理头字体和定理正文字体。
+%    \begin{macrocode}
+\cs_new:Npn \fdu_thm_set_qed:n         #1 { \theoremsymbol     {#1} }
+\cs_new:Npn \fdu_thm_set_header_font:n #1 { \theoremheaderfont {#1} }
+\cs_new:Npn \fdu_thm_set_body_font:n   #1 { \theorembodyfont   {#1} }
+\cs_generate_variant:Nn \fdu_thm_set_qed:n         { V }
+\cs_generate_variant:Nn \fdu_thm_set_header_font:n { V }
+\cs_generate_variant:Nn \fdu_thm_set_body_font:n   { V }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{图表绘制；浮动体}
+%
+% \changes{v0.3}{2017/07/09}{支持浮动体。}
+%
+% 分别设置浮动体 \env{figure} 和 \env{table} 的标题样式。
+%    \begin{macrocode}
+\captionsetup [ figure ]
+  {
+    font     = small,
+    labelsep = quad
+  }
+\captionsetup [ table  ]
+  {
+    font     = { small, sf },
+    labelsep = quad
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{\thefigure,\thetable}
+% \changes{v0.7}{2018/01/17}{改为可完全展开的命令。}
+% 重定义图表编号。
+%    \begin{macrocode}
+\cs_set:Npn \thefigure
+  { \@@_arabic:n { chapter } - \@@_arabic:n { figure } }
+\cs_set:Npn \thetable
+  { \@@_arabic:n { chapter } - \@@_arabic:n { table  } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{封面}
+%
+% \subsubsection{信息录入}
+%
+% \begin{variable}{\l_@@_info_title_tl,
+%   \l_@@_info_date_tl,
+%   \l_@@_info_author_tl,
+%   \l_@@_info_supervisor_tl,
+%   \l_@@_info_department_tl,
+%   \l_@@_info_major_tl,
+%   \l_@@_info_student_id_tl,
+%   \l_@@_info_school_id_tl,
+%   \l_@@_info_clc_tl,
+%   \l_@@_info_instructors_clist,
+%   \l_@@_info_keywords_clist}
+% 封面所需的一些字段。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    title, date, author, supervisor, department, major, student_id,
+    school_id, clc
+  }
+  { \tl_new:c { l_@@_info_ #1 _tl } }
+\clist_new:N \l_@@_info_instructors_clist
+\clist_new:N \l_@@_info_keywords_clist
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_info_title_en_tl,
+%   \l_@@_info_author_en_tl,
+%   \l_@@_info_supervisor_en_tl,
+%   \l_@@_info_department_en_tl,
+%   \l_@@_info_major_en_tl,
+%   \l_@@_info_keywords_en_clist}
+% 对应的英文字段。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  { title, author, supervisor, department, major }
+  { \tl_new:c { l_@@_info_ #1 _en_tl } }
+\clist_new:N \l_@@_info_keywords_en_clist
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_info_degree_type_int}
+% 学位类型。1 为学术学位，2 为专业学位。
+%    \begin{macrocode}
+\int_new:N \l_@@_info_degree_type_int
+%    \end{macrocode}
+% \end{variable}
+%
+% 定义 |fdu/info| 键值类。
+%    \begin{macrocode}
+\keys_define:nn { fdu / info }
+  {
+%    \end{macrocode}
+%
+% \changes{v0.7}{2018/02/01}{新增 \opt{info/degree} 选项。}
+%
+% \begin{macro}{info/degree}
+% 学位类型。只对硕士论文有效。
+%    \begin{macrocode}
+    degree      .choices:nn  =
+      { academic, professional }
+      { \int_set_eq:NN \l_@@_info_degree_type_int \l_keys_choice_int },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/title,info/title*}
+% 论文题目。以下带星号的项目均表示相应的英文字段。
+%    \begin{macrocode}
+    title       .tl_set:N    = \l_@@_info_title_tl,
+    title*      .tl_set:N    = \l_@@_info_title_en_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/date}
+% 论文完成日期。
+%    \begin{macrocode}
+    date        .tl_set:N    = \l_@@_info_date_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/author,info/author*}
+% 作者姓名。
+%    \begin{macrocode}
+    author      .tl_set:N    = \l_@@_info_author_tl,
+    author*     .tl_set:N    = \l_@@_info_author_en_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/supervisor,info/supervisor*}
+% 导师姓名。
+%    \begin{macrocode}
+    supervisor  .tl_set:N    = \l_@@_info_supervisor_tl,
+%   supervisor* .tl_set:N    = \l_@@_info_supervisor_en_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/instructors}
+% 指导小组成员。
+%    \begin{macrocode}
+    instructors .clist_set:N = \l_@@_info_instructors_clist,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/department,info/department*}
+% 院系。
+%    \begin{macrocode}
+    department  .tl_set:N    = \l_@@_info_department_tl,
+%   department* .tl_set:N    = \l_@@_info_department_en_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/major,info/major*}
+% 专业。
+%    \begin{macrocode}
+    major       .tl_set:N    = \l_@@_info_major_tl,
+%   major*      .tl_set:N    = \l_@@_info_major_en_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/student-id}
+% 学号。
+%    \begin{macrocode}
+    student-id  .tl_set:N    = \l_@@_info_student_id_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/school-id}
+% 学校代码。
+%    \begin{macrocode}
+    school-id   .tl_set:N    = \l_@@_info_school_id_tl,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/keywords,info/keywords*}
+% 论文关键字。
+%    \begin{macrocode}
+    keywords    .clist_set:N = \l_@@_info_keywords_clist,
+    keywords*   .clist_set:N = \l_@@_info_keywords_en_clist,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/clc}
+% 中图分类号。
+%    \begin{macrocode}
+    clc         .tl_set:N    = \l_@@_info_clc_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.4}{2017/08/10}{新增 \opt{style/logo} 与
+%   \opt{style/logo-size} 选项。}
+%
+% \begin{variable}{\l_@@_cover_logo_tl,\l_@@_cover_logo_size_clist}
+%    \begin{macrocode}
+\tl_new:N    \l_@@_cover_logo_tl
+\clist_new:N \l_@@_cover_logo_size_clist
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{style/logo,style/logo-size}
+% 校名图片的文件名和尺寸。
+%    \begin{macrocode}
+\keys_define:nn { fdu / style }
+  {
+    logo      .tl_set:N    = \l_@@_cover_logo_tl,
+    logo-size .clist_set:N = \l_@@_cover_logo_size_clist
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{密级}
+%
+% \changes{v0.3}{2017/07/04}{新增 \opt{info/secret-level} 与
+%   \opt{info/secret-year} 选项。}
+%
+% \begin{variable}{\l_@@_secret_bool}
+% 是否显示密级。
+%    \begin{macrocode}
+\bool_new:N \l_@@_secret_bool
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_info_secret_level_tl}
+% 保存当前的密级。
+%    \begin{macrocode}
+\tl_new:N \l_@@_info_secret_level_tl
+%    \end{macrocode}
+% \end{variable}
+%
+%    \begin{macrocode}
+\keys_define:nn { fdu / info }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{info/secret-level}
+% \changes{v0.6}{2017/11/11}{不再依赖 XITS-Math 字体。}
+% 密级。\opt{none} 表示不涉密，\opt{i}、\opt{ii}、\opt{iii} 分别为
+% 秘密、机密、绝密。
+%    \begin{macrocode}
+    secret-level .choices:nn  =
+      { none, i, ii, iii }
+      {
+        \int_compare:nTF
+          { \l_keys_choice_int >= 2 }
+          {
+            \bool_set_true:N \l_@@_secret_bool
+            \tl_set:Nn \l_@@_info_secret_level_tl
+              {
+                \clist_item:Nn \c_@@_secret_clist
+                  { \l_keys_choice_int - 1 }
+              }
+          }
+          { \bool_set_false:N \l_@@_secret_bool }
+      },
+    secret-level .value_required:n = true,
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{info/secret-year}
+% 保密年限。
+%    \begin{macrocode}
+    secret-year  .tl_set:N = \l_@@_info_secret_year_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{定义内部函数}
+%
+% \begin{macro}{\@@_spread_box:nn}
+% 分散对齐的水平盒子。
+% \begin{arguments}
+%   \item 宽度
+%   \item 内容
+% \end{arguments}
+% 利用 \cs{tl_map_inline:nn} 在字符间插入 \tn{hfil}；紧随其后的
+% \tn{unskip} 将会去掉最后一个 \tn{hfil}。见
+% \url{http://tex.stackexchange.com/q/169689}。|#2| 需要完全展开以
+% 避免 underfull 警告。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_spread_box:nn #1#2
+  {
+    \mode_leave_vertical:
+    \hbox_to_wd:nn {#1}
+      { \tl_map_inline:xn {#2} { ##1 \hfil } \unskip }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_center_box:nn,\@@_center_box:Vn}
+% 居中对齐的水平盒子。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_center_box:nn #1#2
+  {
+    \mode_leave_vertical:
+    \hbox_to_wd:nn {#1} { \hfil #2 \hfil }
+  }
+\cs_generate_variant:Nn \@@_center_box:nn  { Vn }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fixed_width_box:nn}
+% 限宽盒子（允许换行）。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fixed_width_box:nn #1#2
+  { \parbox {#1} {#2} }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_fixed_width_center_box:nn}
+% 居中对齐的限宽盒子（允许换行）。
+%    \begin{macrocode}
+\cs_new:Npn \@@_fixed_width_center_box:nn #1#2
+  { \parbox {#1} { \centering #2 } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_text_width:Nn,\@@_get_text_width:NV}
+% 获取文本宽度，并存入 |dim| 型变量。
+% \begin{arguments}
+%   \item |dim| 型变量
+%   \item 内容
+% \end{arguments}
+%    \begin{macrocode}
+\cs_new:Npn \@@_get_text_width:Nn #1#2
+  {
+    \hbox_set:Nn \l_@@_tmpa_box {#2}
+    \dim_set:Nn #1 { \box_wd:N \l_@@_tmpa_box }
+  }
+\cs_generate_variant:Nn \@@_get_text_width:Nn { NV }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_get_max_text_width:NN}
+% \changes{v0.6}{2017/11/24}{移除不必要的字号设置。}
+% 获取多个文本中的最大宽度，并存入 |dim| 型变量。
+% \begin{arguments}
+%   \item |dim| 型变量
+%   \item 文本 |clist|
+% \end{arguments}
+% 当 \cs{l_@@_tmpa_clist} 非空时，弹出最后一个元素
+% 赋给 \cs{l_@@_tmpa_tl}，获取其长度后与 |#1| 进行比较，
+% 二者中较大的那一个将成为 |#1| 的新值。
+% 不断循环，直至 \cs{l_@@_tmpa_clist} 为空。
+%    \begin{macrocode}
+\cs_new:Npn \@@_get_max_text_width:NN #1#2
+  {
+%    \end{macrocode}
+% 这里用 |group| 确保局部变量不会被污染。
+%    \begin{macrocode}
+    \group_begin:
+      \clist_set_eq:NN \l_@@_tmpa_clist #2
+      \bool_until_do:nn { \clist_if_empty_p:N \l_@@_tmpa_clist }
+        {
+          \clist_pop:NN \l_@@_tmpa_clist \l_@@_tmpa_tl
+          \@@_get_text_width:NV \l_@@_tmpa_dim \l_@@_tmpa_tl
+          \dim_gset:Nn #1 { \dim_max:nn {#1} { \l_@@_tmpa_dim } }
+        }
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_blank_underline:n}
+% \changes{v0.4}{2017/08/14}{改用 \tn{rule} 绘制下划线，不再依赖
+%   \pkg{ulem} 宏包。}
+% 下划线占位符。|#1|: 长度。
+%    \begin{macrocode}
+\cs_new:Npn \@@_blank_underline:n #1
+  { \rule [ -0.5 ex ] {#1} { 0.4 pt } }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_line_spread:N,\@@_line_spread:n}
+% 设置行距。|#1|: 行距倍数 |fp| 变量。
+%    \begin{macrocode}
+\cs_new:Npn \@@_line_spread:N #1
+  { \linespread { \fp_use:N #1 } \selectfont }
+\cs_new:Npn \@@_line_spread:n #1
+  { \linespread {#1} \selectfont }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{封面各部件}
+%
+% \changes{v0.5}{2017/09/19}{使用 \pkg{expl3} 以及内部函数改写
+%   封面，减少对 \LaTeXe{} 的依赖。}
+%
+% \begin{macro}{\@@_cover_id:,\@@_cover_id_aux:n}
+% 右上角的学校代码和学号。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_id:
+  {
+    \@@_fixed_width_box:nn { 120 pt }
+      {
+        \bool_if:NT \l_@@_secret_bool
+          {
+            \group_begin:
+              \sffamily
+              \@@_cover_id_aux:n { secret_level }
+              \c_@@_name_secret_star_tl
+              \l_@@_info_secret_year_tl
+            \group_end:
+            \par
+          }
+        \@@_cover_id_aux:n { school_id  } \par
+        \@@_cover_id_aux:n { student_id }
+      }
+%    \end{macrocode}
+% 插入一个宽度为负的水平盒子以减少右侧边距。
+%    \begin{macrocode}
+    \hbox_to_wd:nn { -24 pt } { }
+  }
+\cs_new:Npn \@@_cover_id_aux:n #1
+  {
+    \tl_use:c { c_@@_name_ #1 _tl }
+    \c_@@_fullwidth_colon_tl
+    \tl_use:c { l_@@_info_ #1 _tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_cover_logo:}
+% 插入校名图片。根据参数 \opt{width} 和 \opt{height} 是否为空依次
+% 判断。\cs{l_@@_cover_logo_size_clist} 中超过两个的参数将被忽略。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_logo:
+  {
+    \clist_pop:NN   \l_@@_cover_logo_size_clist \l_@@_tmpa_tl
+    \clist_pop:NNTF \l_@@_cover_logo_size_clist \l_@@_tmpb_tl
+      {
+        \tl_if_empty:NTF \l_@@_tmpa_tl
+          { \includegraphics [ height = \l_@@_tmpb_tl ] }
+          {
+            \includegraphics
+              [ width  = \l_@@_tmpa_tl, height = \l_@@_tmpb_tl ]
+          }
+      }
+      { \includegraphics [ width = \l_@@_tmpa_tl ] }
+    { \l_@@_cover_logo_tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_cover_type:}
+% 论文类型。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_type:
+  {
+    \tl_set:Nx \l_@@_tmpa_tl
+      {
+        \clist_item:Nn \c_@@_thesis_type_clist
+          { \g_@@_thesis_type_int }
+      }
+    \@@_spread_box:nn { 0.45 \textwidth } { \l_@@_tmpa_tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_cover_degree:}
+% 学位类型。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_degree:
+  {
+    \int_compare:nNnT \g_@@_thesis_type_int = \c_two
+      {
+        \tl_set:Nx \l_@@_tmpa_tl
+          {
+            \clist_item:Nn \c_@@_degree_type_clist
+              { \l_@@_info_degree_type_int }
+          }
+        \c_@@_fullwidth_left_paren_tl
+        \l_@@_tmpa_tl
+        \c_@@_fullwidth_right_paren_tl
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_cover_info:}
+% 信息栏。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_info:
+  {
+    \begin{minipage} [ c ] { \textwidth }
+      \centering \zihao { 4 }
+%    \end{macrocode}
+% 读取左侧名称字段。
+%    \begin{macrocode}
+      \clist_set:Nx \l_@@_tmpa_clist
+        {
+          \c_@@_name_department_tl,
+          \c_@@_name_major_tl,
+          \c_@@_name_author_tl,
+          \c_@@_name_supervisor_tl,
+          \c_@@_name_date_tl,
+        }
+%    \end{macrocode}
+% 设置信息栏右侧宽度。读取各字段，并将最宽者的宽度赋给
+% \cs{l_@@_tmpb_dim}。
+%    \begin{macrocode}
+      \clist_set:Nx \l_@@_tmpb_clist
+        {
+          { \l_@@_info_department_tl },
+          { \l_@@_info_major_tl      },
+          { \l_@@_info_author_tl     },
+          { \l_@@_info_supervisor_tl },
+          { \l_@@_info_date_tl       }
+        }
+      \@@_get_max_text_width:NN \l_@@_tmpb_dim \l_@@_tmpb_clist
+%    \end{macrocode}
+% 用循环输出各字段。
+%    \begin{macrocode}
+      \bool_until_do:nn
+        { \clist_if_empty_p:N \l_@@_tmpa_clist }
+        {
+          \clist_pop:NN \l_@@_tmpa_clist \l_@@_tmpa_tl
+          \clist_pop:NN \l_@@_tmpb_clist \l_@@_tmpb_tl
+          \@@_spread_box:nn { 6 em } { \l_@@_tmpa_tl }
+          \c_@@_fullwidth_colon_tl
+          \@@_center_box:Vn \l_@@_tmpb_dim { \l_@@_tmpb_tl }
+          \skip_vertical:n { 1 ex }
+        }
+    \end{minipage}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_cover_signature:N}
+% 签名行。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_cover_signature:N #1
+  {
+    \clist_map_inline:Nn #1
+      {
+        ##1 \c_@@_fullwidth_colon_tl
+        \@@_blank_underline:n { 6 em }
+        \@@_quad:
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{封面模板}
+%
+% \changes{v0.7}{2018/02/27}{使用 \pkg{xtemplate} 重构封面布局。}
+%
+% 声明封面对象。不需要带参数。
+%    \begin{macrocode}
+%<@@=fdu_cover>
+\DeclareObjectType { fdu / cover } { \c_zero }
+%    \end{macrocode}
+%
+% \begin{macro}{\DeclareCoverTemplate,\fdu_cover_declare_template:nn}
+% 声明封面模板。
+% \begin{arguments}
+%   \item 模板名称
+%   \item 封面部件列表，以逗号分隔
+% \end{arguments}
+%    \begin{macrocode}
+\NewDocumentCommand \DeclareCoverTemplate { m m }
+  { \fdu_cover_declare_template:nn {#1} {#2} }
+\cs_new_protected:Npn \fdu_cover_declare_template:nn #1#2
+  {
+    \tl_set:Nn \l_@@_template_tl {#1}
+%    \end{macrocode}
+% 构建模板接口。
+%    \begin{macrocode}
+    \@@_declare_template_interface:nx {#1}
+      {
+        format      : tokenlist,
+        top-skip    : skip,
+        bottom-skip : skip,
+        \clist_map_function:nN {#2} \@@_key_type:n
+      }
+%    \end{macrocode}
+% 声明所用变量。
+%    \begin{macrocode}
+    \tl_new:c   { l_@@ / #1 / format_tl   }
+    \skip_new:c { l_@@ / #1 / top_skip    }
+    \skip_new:c { l_@@ / #1 / bottom_skip }
+    \clist_map_inline:nn {#2}
+      {
+        \tl_new:c   { l_@@ / #1 / ##1 / content_tl  }
+        \tl_new:c   { l_@@ / #1 / ##1 / format_tl   }
+        \skip_new:c { l_@@ / #1 / ##1 / bottom_skip }
+      }
+%    \end{macrocode}
+% 声明模板代码。
+%    \begin{macrocode}
+    \@@_declare_template_code:nxn {#1}
+      {
+        format      = \exp_not:c { l_@@ / #1 / format_tl   },
+        top-skip    = \use:c     { l_@@ / #1 / top_skip    },
+        bottom-skip = \use:c     { l_@@ / #1 / bottom_skip },
+        \clist_map_function:nN {#2} \@@_key_binding:n
+      }
+      {
+        \AssignTemplateKeys
+        \tl_use:c       { l_@@ / #1 / format_tl }
+        \__fdu_vspace:c { l_@@ / #1 / top_skip  }
+        \clist_map_inline:nn {#2}
+          {
+            \use:c { @@ / #1 / ####1 / align:n }
+              {
+                \tl_use:c { l_@@ / #1 / ####1 / format_tl  }
+                \tl_use:c { l_@@ / #1 / ####1 / content_tl }
+                \par
+              }
+            \__fdu_vspace:c { l_@@ / #1 / ####1 / bottom_skip }
+          }
+        \__fdu_vspace:c { l_@@ / #1 / bottom_skip }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\l_@@_template_tl}
+% 保存模板名称。
+%    \begin{macrocode}
+\tl_new:N \l_@@_template_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{macro}{\@@_declare_template_interface:nn,
+%   \@@_declare_template_code:nnn,
+%   \@@_declare_template_interface:nx,
+%   \@@_declare_template_code:nxn}
+% 为了展开的方便，这里需要封装 \pkg{xtemplate} 的一些函数。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_declare_template_interface:nn #1#2
+  { \DeclareTemplateInterface { fdu / cover } {#1} { \c_zero } {#2} }
+\cs_new_protected:Npn \@@_declare_template_code:nnn #1#2#3
+  { \DeclareTemplateCode { fdu / cover } {#1} { \c_zero } {#2} {#3} }
+\cs_generate_variant:Nn \@@_declare_template_interface:nn { nx  }
+\cs_generate_variant:Nn \@@_declare_template_code:nnn     { nxn }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_key_type:n}
+%    \begin{macrocode}
+\cs_new:Npn \@@_key_type:n #1
+  {
+    #1 / content     : tokenlist,
+    #1 / format      : tokenlist,
+    #1 / bottom-skip : skip,
+    #1 / align       : choice { left, right, center, normal } = normal,
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_key_binding:n}
+%    \begin{macrocode}
+\cs_new:Npn \@@_key_binding:n #1
+  {
+    #1 / content     =
+      \exp_not:c
+        { l_@@ / \l_@@_template_tl / #1 / content_tl  },
+    #1 / format      =
+      \exp_not:c
+        { l_@@ / \l_@@_template_tl / #1 / format_tl   },
+    #1 / bottom-skip =
+      \exp_not:c
+        { l_@@ / \l_@@_template_tl / #1 / bottom_skip },
+    #1 / align       =
+      {
+        left   =
+          \exp_not:N \cs_set_protected:cpn
+            { @@ / \l_@@_template_tl / #1 / align:n }
+            \exp_not:n {##1}
+            {
+              \exp_not:n
+                {
+                  \group_begin:
+                    \flushleft ##1 \endflushleft
+                  \group_end:
+                }
+            },
+        right  =
+          \exp_not:N \cs_set_protected:cpn
+            { @@ / \l_@@_template_tl / #1 / align:n }
+            \exp_not:n {##1}
+            {
+              \exp_not:n
+                {
+                  \group_begin:
+                    \flushright ##1 \endflushright
+                  \group_end:
+                }
+            },
+        center =
+          \exp_not:N \cs_set_protected:cpn
+            { @@ / \l_@@_template_tl / #1 / align:n }
+            \exp_not:n {##1}
+            {
+              \exp_not:n
+                {
+                  \group_begin:
+                    \center ##1 \endcenter
+                  \group_end:
+                }
+            },
+        normal =
+          \exp_not:N \cs_set_protected:cpn
+            { @@ / \l_@@_template_tl / #1 / align:n }
+            \exp_not:n {##1}
+            { \exp_not:n { \group_begin: ##1 \group_end: } }
+      },
+  }
+%<@@=fdu>
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{绘制封面}
+%
+% \begin{macro}{\makecoveri,\makecoverii,\makecoveriii}
+% 使用实例（instance）构建封一、封二、封三。
+%    \begin{macrocode}
+\NewDocumentCommand \makecoveri { }
+  {
+    \thispagestyle { empty }
+    \UseInstance { fdu / cover } { cover-i-default }
+  }
+\NewDocumentCommand \makecoverii { }
+  {
+    \thispagestyle { empty }
+    \UseInstance { fdu / cover } { cover-ii-default }
+  }
+\NewDocumentCommand \makecoveriii { }
+  {
+    \cleardoublepage
+    \thispagestyle { empty }
+    \UseInstance { fdu / cover } { cover-iii-default }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 声明各封面模板组成部分。
+%    \begin{macrocode}
+\DeclareCoverTemplate { cover-i   }
+  { id, logo, type, degree, title, title-en, info }
+\DeclareCoverTemplate { cover-ii  } { title, name-list }
+\DeclareCoverTemplate { cover-iii }
+  {
+    originality-decl-name,
+    originality-decl-text,
+    originality-decl-sig,
+    authorization-decl-name,
+    authorization-decl-text,
+    authorization-decl-sig
+  }
+%    \end{macrocode}
+%
+% 定义封面的具体配置参数。
+%    \begin{macrocode}
+\DeclareInstance { fdu / cover } { cover-i-default } { cover-i }
+  {
+%<class-en>    format                 =
+%<class-en>      \@@_line_spread:N \c_@@_line_spread_fp,
+    bottom-skip            = 0 pt plus 1.5 fill,
+    id       / content     = \@@_cover_id:,
+    logo     / content     = \@@_cover_logo:,
+    type     / content     = \@@_cover_type:,
+    degree   / content     = \@@_cover_degree:,
+    title    / content     =
+      \@@_fixed_width_center_box:nn
+        { 0.9 \textwidth } { \l_@@_info_title_tl },
+    title-en / content     =
+      \@@_fixed_width_center_box:nn
+        { 0.9 \textwidth } { \l_@@_info_title_en_tl },
+    info     / content     = \@@_cover_info:,
+    id       / format      = \zihao { -5 },
+    type     / format      = \zihao {  2 },
+    degree   / format      = \zihao {  4 },
+    title    / format      = \zihao { -2 } \sffamily,
+    title-en / format      =
+      \@@_line_spread:n { 1.2 } \zihao { 4 } \bfseries,
+    id       / bottom-skip = 0 pt plus 1.6 fill,
+    logo     / bottom-skip = 0 pt plus 0.3 fill,
+    type     / bottom-skip = -18 pt,
+    degree   / bottom-skip = 0 pt plus 0.8 fill,
+    title-en / bottom-skip = 0 pt plus 2.5 fill,
+    id       / align       = right,
+    logo     / align       = center,
+    type     / align       = center,
+    degree   / align       = center,
+    title    / align       = center,
+    title-en / align       = center,
+    info     / align       = center,
+  }
+\DeclareInstance { fdu / cover } { cover-ii-default } { cover-ii }
+  {
+%<class-en>    format              =
+%<class-en>      \@@_line_spread:N \c_@@_line_spread_fp,
+    title     / content =
+      \@@_spread_box:nn { 7 em } { \c_@@_name_instructors_tl },
+    name-list / content =
+      \clist_use:Nn \l_@@_info_instructors_clist { \par },
+    title     / format  = \zihao { 2 } \sffamily,
+    name-list / format  = \large,
+    title     / align   = center,
+    name-list / align   = center,
+  }
+\DeclareInstance { fdu / cover } { cover-iii-default } { cover-iii }
+  {
+    format                                =
+%<class>      \@@_line_spread:n { 1.8 },
+%<class-en>      \@@_line_spread:n { 1.8 } \dim_set:Nn \parindent { 2 \ccwd },
+    top-skip                              = 0 pt plus 0.2 fill,
+    bottom-skip                           = 0 pt plus 2.5 fill,
+    originality-decl-name   / content     = \c_@@_name_orig_decl_tl,
+    originality-decl-text   / content     = \c_@@_orig_decl_text_tl,
+    originality-decl-sig    / content     =
+      \@@_cover_signature:N \c_@@_orig_decl_sign_clist,
+    authorization-decl-name / content     = \c_@@_name_auth_decl_tl,
+    authorization-decl-text / content     = \c_@@_auth_decl_text_tl,
+    authorization-decl-sig  / content     =
+      \@@_cover_signature:N \c_@@_auth_decl_sign_clist,
+    originality-decl-name   / format      =
+      \@@_line_spread:n { 1.2 } \zihao { -2 } \sffamily,
+    authorization-decl-name / format      =
+      \@@_line_spread:n { 1.2 } \zihao { -2 } \sffamily,
+    originality-decl-name   / bottom-skip = 0.4 cm,
+    originality-decl-text   / bottom-skip = 0.4 cm,
+    originality-decl-sig    / bottom-skip = 0 pt plus 2.5 fill,
+    authorization-decl-name / bottom-skip = 0.4 cm,
+    authorization-decl-text / bottom-skip = 0.4 cm,
+    originality-decl-name   / align       = center,
+    originality-decl-sig    / align       = right,
+    authorization-decl-name / align       = center,
+    authorization-decl-sig  / align       = right,
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{style/auto-make-cover}
+% \begin{variable}{\l_@@_auto_make_cover_bool}
+% 是否自动生成封面。
+%    \begin{macrocode}
+\bool_new:N \l_@@_auto_make_cover_bool
+\keys_define:nn { fdu / style }
+  {
+    auto-make-cover .bool_set:N = \l_@@_auto_make_cover_bool,
+    auto-make-cover .default:n  = true
+  }
+%    \end{macrocode}
+% \end{variable}
+% \end{macro}
+%
+% 在 \env{document} 开始位置添加封面以及指导小组成员名单。
+%    \begin{macrocode}
+\AtBeginDocument
+  {
+    \bool_if:NT \l_@@_auto_make_cover_bool
+      {
+        \begin{titlepage}
+          \makecoveri \newpage \makecoverii
+        \end{titlepage}
+      }
+  }
+%    \end{macrocode}
+%
+% 在 \env{document} 结束位置添加声明页。
+%    \begin{macrocode}
+\AtEndDocument
+  { \bool_if:NT \l_@@_auto_make_cover_bool { \makecoveriii } }
+%    \end{macrocode}
+%
+% \subsection{目录}
+%
+% \begin{variable}{\@@_chapter_toc_format:,\@@_chapter_toc_en_format:}
+% 目录中章标题的样式还要用在摘要、符号表中。因为摘要分中英文，所以这里
+% 需要分别定义其样式。
+%    \begin{macrocode}
+\tl_const:Nn \@@_chapter_toc_format:    { \normalfont \sffamily }
+\tl_const:Nn \@@_chapter_toc_en_format: { \bfseries }
+%    \end{macrocode}
+% \end{variable}
+%
+% 设置目录标题。
+%    \begin{macrocode}
+\keys_set:nn { ctex }
+  {
+%<class>    contentsname = \c_@@_name_toc_tl,
+%<class-en>    contentsname = \c_@@_name_toc_en_tl,
+%    \end{macrocode}
+%
+% 设置目录中章节标题的样式。
+%    \begin{macrocode}
+    chapter / tocline =
+      {
+%<class>        \@@_chapter_toc_format:
+%<class-en>        \@@_chapter_toc_en_format:
+        \CTEXnumberline {#1} #2
+      },
+    section / tocline =
+      {
+%<class-en>        \bfseries
+         \CTEXnumberline {#1} #2
+      },
+    subsection / tocline =
+      {
+%<class>        \fdu@kai
+         \CTEXnumberline {#1} #2
+      }
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{\tableofcontents}
+% 修改 \tn{tableofcontents} 的定义，使得页眉正确显示。第二个参数中的
+% 代码来源于 \LaTeXe{} 标准文档类 \file{book.cls}。
+%    \begin{macrocode}
+\@@_patch_cmd:Nnn \tableofcontents
+  {
+    \chapter*{\contentsname
+      \@mkboth{%
+        \MakeUppercase\contentsname}{\MakeUppercase\contentsname}}%
+  }
+  {
+    \chapter* { \contentsname }
+%<class>    \fdu_front_matter_header:n { \c_@@_name_toc_tl }
+%<class-en>    \fdu_front_matter_header:n { \c_@@_name_toc_en_tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}[int]{\@starttoc}
+% 修改 \tn{@starttoc} 的定义以调整英文模板中的目录行距。
+%    \begin{macrocode}
+%<*class-en>
+\@@_patch_cmd:Nnn \@starttoc
+  { \begingroup }
+  {
+    \begingroup
+      \@@_line_spread:N \c_@@_line_spread_fp
+  }
+%</class-en>
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{摘要}
+%
+% \begin{environment}{abstract}
+% \begin{environment}{abstract*}
+% \changes{v0.7}{2018/03/05}{整理代码。}
+% 摘要环境。在中文模板定义了中英文双语摘要，但在英文模板中则没有
+% 定义中文摘要。
+%    \begin{macrocode}
+\NewDocumentEnvironment { abstract  } { }
+%<class>  { \@@_abstract_begin:    } { \@@_abstract_end:      }
+%<class-en>  { \@@_abstract_en_begin: } { \@@_abstract_en_end:   }
+%<*class>
+\NewDocumentEnvironment { abstract* } { }
+  { \@@_abstract_en_begin: } { \@@_abstract_en_end:   }
+%</class>
+%    \end{macrocode}
+% \end{environment}
+% \end{environment}
+%
+% \begin{macro}{\@@_abstract_begin:,\@@_abstract_en_begin:}
+% 摘要页需要修改页眉，并添加到目录。
+%    \begin{macrocode}
+%<*class>
+\cs_new_protected:Npn \@@_abstract_begin:
+  {
+    \chapter* { \c_@@_name_abstract_tl }
+    \fdu_front_matter_header:n { \c_@@_name_abstract_tl }
+    \addcontentsline { toc } { chapter }
+      {
+        \@@_chapter_toc_format:
+        \c_@@_name_abstract_tl
+      }
+  }
+%</class>
+\cs_new_protected:Npn \@@_abstract_en_begin:
+  {
+    \chapter* { \c_@@_name_abstract_en_tl }
+    \fdu_front_matter_header:n { \c_@@_name_abstract_en_tl }
+    \addcontentsline { toc } { chapter }
+      {
+%<class>        \@@_chapter_toc_format:
+%<class-en>        \@@_chapter_toc_en_format:
+        \c_@@_name_abstract_en_tl
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_abstract_end:,\@@_abstract_en_end:}
+% 摘要正文完成后，输出关键字列表和中图分类号（CLC）。
+%    \begin{macrocode}
+%<*class>
+\cs_new_protected:Npn \@@_abstract_end:
+  {
+    \@@_keywords_par:
+    \textsf { \c_@@_name_keywords_tl \c_@@_fullwidth_colon_tl }
+    \clist_use:Nn \l_@@_info_keywords_clist
+      { \c_@@_fullwidth_semicolon_tl }
+    \@@_clc_par:
+    \textsf { \c_@@_name_clc_tl \c_@@_fullwidth_colon_tl }
+    \l_@@_info_clc_tl
+  }
+%</class>
+\cs_new_protected:Npn \@@_abstract_en_end:
+  {
+    \@@_keywords_par:
+    \textbf { \c_@@_name_keywords_en_tl } \@@_quad:
+    \clist_use:Nn \l_@@_info_keywords_en_clist { \@@_quad: }
+    \@@_clc_par:
+    \textbf { \c_@@_name_clc_en_tl } \@@_quad:
+    \l_@@_info_clc_tl
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_keywords_par:,\@@_clc_par:}
+% 关键字列表前要空一行，使用悬挂缩进；中图分类号不缩进。
+%    \begin{macrocode}
+\cs_new:Npn \@@_keywords_par:
+  {
+    \par \mode_leave_vertical: \par
+    \noindent \hangindent = 4 em  \hangafter = 1
+  }
+\cs_new:Npn \@@_clc_par:
+  { \par \noindent }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{符号表}
+%
+% \begin{environment}{notation}
+% \changes{v0.7}{2018/03/05}{整理代码。}
+% 符号表环境，利用 \env{longtable} 封装。可选参数为表格列格式说明符。
+%    \begin{macrocode}
+\NewDocumentEnvironment { notation } { O { l p { 7.5 cm } } }
+  {
+    \@@_notation_begin:
+    \group_begin:
+      \@@_notation_long_table_setup:
+      \longtable {#1}
+  }
+  {
+      \endlongtable
+    \group_end:
+  }
+%    \end{macrocode}
+% \end{environment}
+%
+% \begin{macro}{\@@_notation_begin:}
+% 与摘要类似，符号表页需要修改页眉，并添加到目录。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_notation_begin:
+  {
+%<*class>
+    \chapter* { \c_@@_name_notation_tl }
+    \fdu_front_matter_header:n { \c_@@_name_notation_tl }
+    \addcontentsline { toc } { chapter }
+      {
+        \@@_chapter_toc_format:
+        \c_@@_name_notation_tl
+      }
+%</class>
+%<*class-en>
+    \chapter* { \c_@@_name_notation_en_tl }
+    \fdu_front_matter_header:n { \c_@@_name_notation_en_tl }
+    \addcontentsline { toc } { chapter }
+      {
+        \@@_chapter_toc_en_format:
+        \c_@@_name_notation_en_tl
+      }
+%</class-en>
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_notation_long_table_setup:}
+% 调整 \cs{LTpre} 和 \cs{LTpost}，以删去 \env{longtable} 前后的空白。
+% 英文模板中还需要调整表格的行距。注意 \tn{arraystretch} 只是一个简单
+% 宏，不能使用 \cs{fp_set:Nn}。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_notation_long_table_setup:
+  {
+%<class-en>      \tl_set:Nn \arraystretch { 1.3 }
+      \dim_set_eq:NN \LTpre  \c_zero_dim
+      \dim_set_eq:NN \LTpost \c_zero_dim
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{参考文献著录与引用}
+%
+% \changes{v0.6}{2017/10/27}{支持 \BibTeX{}，以实现参考文献的著录
+%   与引用。}
+% \changes{v0.7}{2018/01/25}{支持 \biber{} 与 \pkg{biblatex}。}
+%
+% \begin{variable}{\l_@@_bibtex_bool}
+% 是否使用 \BibTeX{} 作为参考文献处理程序。若为否，则使用
+% \pkg{biblatex}/\biber{}。
+%    \begin{macrocode}
+\bool_new:N \l_@@_bibtex_bool
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_bib_style_tl,\l_@@_bib_gb_style_tl,
+%   \l_@@_cite_style_tl}
+% 保存参考文献及引用样式。
+%    \begin{macrocode}
+\tl_new:N \l_@@_bib_style_tl
+\tl_new:N \l_@@_bib_gb_style_tl
+\tl_new:N \l_@@_cite_style_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\l_@@_bib_resource_tl}
+% 保存参考文献数据库列表。
+%    \begin{macrocode}
+\tl_new:N \l_@@_bib_resource_tl
+%    \end{macrocode}
+% \end{variable}
+%
+% \changes{v0.6}{2017/10/28}{新增 \opt{style/bib-style} 选项。}
+% \changes{v0.7}{2018/01/25}{新增 \opt{style/bib-backend}、
+%   \opt{style/cite-style} 和 \opt{style/bib-resource} 选项。}
+%
+%    \begin{macrocode}
+\keys_define:nn { fdu / style }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{style/bib-backend}
+% 参考文献后端。
+%    \begin{macrocode}
+    bib-backend .choice:,
+    bib-backend .value_required:n = true,
+    bib-backend / bibtex   .code:n =
+      { \bool_set_true:N  \l_@@_bibtex_bool },
+    bib-backend / biblatex .code:n =
+      { \bool_set_false:N \l_@@_bibtex_bool },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{style/bib-style}
+% 参考文献样式。
+%    \begin{macrocode}
+    bib-style .choice:,
+    bib-style .value_required:n = true,
+    bib-style / numerical    .code:n =
+      {
+        \tl_set:Nn  \l_@@_bib_gb_style_tl { numerical  }
+        \tl_clear:N \l_@@_bib_style_tl
+      },
+    bib-style / author-year .code:n =
+      {
+        \tl_set:Nn  \l_@@_bib_gb_style_tl { author-year }
+        \tl_clear:N \l_@@_bib_style_tl
+      },
+    bib-style / unknown     .code:n =
+      { \tl_set_eq:NN \l_@@_bib_style_tl \l_keys_value_tl },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{style/cite-style}
+% 引用样式。
+%    \begin{macrocode}
+    cite-style .code:n =
+      {
+        \bool_if:NTF \l_@@_bibtex_bool
+          { \@@_warning:n { cite-style-not-available } }
+          { \tl_set:Nn \l_@@_cite_style_tl {#1} }
+      },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{style/bib-resource}
+% 参考文献数据源。
+%    \begin{macrocode}
+    bib-resource .tl_set:N = \l_@@_bib_resource_tl
+  }
+\@@_msg_new:nn { cite-style-not-available }
+  { Option~ "cite-style"~ is~ not~ available~ in~ BibTeX. }
+%    \end{macrocode}
+% \end{macro}
+%
+% 为了保证导言区中的设置能起作用，\pkg{natbib} 或 \pkg{biblatex} 宏包
+% 均需要在导言区末尾载入（仍在 \pkg{hyperref} 之前）。
+%    \begin{macrocode}
+\ctex_at_end_preamble:n
+  {
+%    \end{macrocode}
+%
+% 调用 \pkg{natbib} 宏包并进行配置。
+%    \begin{macrocode}
+    \bool_if:NTF \l_@@_bibtex_bool
+      {
+        \RequirePackage [ sort & compress ] { natbib }
+        \@@_bibtex_setup:
+%    \end{macrocode}
+%
+% \changes{v0.7}{2018/01/25}{统一使用 \cs{printbibliography} 命令
+%   生成参考文献列表。}
+%
+% \begin{macro}{\printbibliography}
+% \BibTeX{} 下接口与 \pkg{biblatex} 统一。
+%    \begin{macrocode}
+        \NewDocumentCommand \printbibliography { o }
+          {
+            \exp_args:NV \bibliography \l_@@_bib_resource_tl
+            \IfValueT {#1}
+              { \@@_warning:nn { invalid-option-in-bibtex } {#1} }
+          }
+      }
+%    \end{macrocode}
+% \end{macro}
+%
+% 调用 \pkg{biblatex} 宏包，并载入参考文献数据库。
+% \cs{@@_biblatex_setup:} 依靠传入宏包选项，因此要放在
+% \tn{RequirePackage} 之前。
+%    \begin{macrocode}
+      {
+        \@@_biblatex_setup:
+        \RequirePackage [ backend = biber, hyperref = manual, natbib ]
+          { biblatex }
+        \exp_args:NV \addbibresource \l_@@_bib_resource_tl
+        \@@_biblatex_allow_url_break:
+%    \end{macrocode}
+% 英文模板需要重定义参考文献标题。
+%    \begin{macrocode}
+%<*class-en>
+        \exp_args:Nnx \DefineBibliographyStrings { english }
+          { bibliography = { \c_@@_name_bib_en_tl } }
+%</class-en>
+      }
+  }
+\@@_msg_new:nn { invalid-option-in-bibtex }
+  { Option(s)~ "#1"~ are~ invalid~ in~ BibTeX. }
+%    \end{macrocode}
+%
+% \begin{macro}{\@@_bibtex_setup:}
+% \BibTeX{} 设置。
+%    \begin{macrocode}
+\cs_new:Npn \@@_bibtex_setup:
+  {
+    \tl_if_empty:NTF \l_@@_bib_style_tl
+      {
+        \tl_if_eq:VnTF \l_@@_bib_gb_style_tl { numerical }
+          {
+            \bibliographystyle { gbt7714-unsrt }
+            \@@_set_cite_style_numerical:
+          }
+          {
+            \tl_if_eq:VnT \l_@@_bib_gb_style_tl { author-year }
+              {
+                \bibliographystyle { gbt7714-plain }
+                \@@_set_cite_style_author_year:
+                \cs_set_eq:NN \cite \citep
+              }
+          }
+      }
+      { \exp_args:NV \bibliographystyle \l_@@_bib_style_tl }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_biblatex_setup:}
+% \pkg{biblatex} 设置。
+%    \begin{macrocode}
+\cs_new:Npn \@@_biblatex_setup:
+  {
+%    \end{macrocode}
+% 参考文献样式。
+%    \begin{macrocode}
+    \tl_if_empty:NTF \l_@@_bib_style_tl
+      {
+        \tl_if_eq:VnTF \l_@@_bib_gb_style_tl { numerical }
+          { \PassOptionsToPackage { style = gb7714-2015 } }
+          {
+            \tl_if_eq:VnT \l_@@_bib_gb_style_tl { author-year }
+              { \PassOptionsToPackage { style = gb7714-2015ay } }
+          }
+      }
+      { \PassOptionsToPackage { style = \l_@@_bib_style_tl } }
+    { biblatex }
+%    \end{macrocode}
+% 引用样式。
+%    \begin{macrocode}
+    \tl_if_empty:NF \l_@@_cite_style_tl
+      {
+        \PassOptionsToPackage { citestyle = \l_@@_bib_style_tl }
+          { biblatex }
+      }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_biblatex_allow_url_break:}
+% \pkg{biblatex} 下允许 URL 在字母、数字和一些特殊符号处断行。
+%    \begin{macrocode}
+\cs_new:Npn \@@_biblatex_allow_url_break:
+  {
+    \int_set_eq:NN \c@biburlucpenalty  \c_one
+    \int_set_eq:NN \c@biburlnumpenalty \c_one
+    \int_set_eq:NN \c@biburllcpenalty  \c_one
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_cite_style_numerical:}
+% 顺序编码制下的引用样式。
+%    \begin{macrocode}
+\cs_new:Npn \@@_set_cite_style_numerical:
+  {
+    \NAT@numberstrue \NAT@supertrue
+    \cs_set:Npn \NAT@open  { [  }
+    \cs_set:Npn \NAT@close { ]  }
+    \cs_set:Npn \NAT@sep   { ,~ }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_cite_style_author_year:}
+% 著者—出版年制下的引用样式。
+%    \begin{macrocode}
+\cs_new:Npn \@@_set_cite_style_author_year:
+  {
+    \NAT@numbersfalse
+%<*class>
+    \cs_set_eq:NN \NAT@open  \c_@@_fullwidth_left_paren_tl
+    \cs_set_eq:NN \NAT@close \c_@@_fullwidth_right_paren_tl
+    \cs_set_eq:NN \NAT@sep   \c_@@_fullwidth_semicolon_tl
+    \cs_set_eq:NN \NAT@aysep \c_@@_fullwidth_comma_tl
+    \cs_set_eq:NN \NAT@yrsep \c_@@_ideographic_comma_tl
+%</class>
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\bibsection}
+% 修改参考文献部分的页眉，并将其添加到目录。
+%    \begin{macrocode}
+\cs_set:Npn \bibsection
+  {
+    \chapter* { \bibname }
+    \fdu_front_matter_header:n { \bibname }
+    \addcontentsline { toc } { chapter }
+      { \@@_chapter_toc_format: \bibname }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.7}{2018/01/25}{同步 \pkg{gbt7714} v1.0，移除有关超链接
+%   的额外设置。}
+%
+% \subsection{\pkg{hyperref} 相关配置}
+%
+% \changes{v0.4}{2017/08/13}{新增 \pkg{hyperref} 相关配置，包括超链接
+%   样式（\opt{style/hyperlink} 与 \opt{style/hyperlink-color} 选项）
+%   及 PDF 元信息等。}
+% \changes{v0.7}{2018/01/23}{将 \pkg{hyperref} 相关配置移至模板末尾，
+%   以减少冲突。}
+%
+% \begin{macro}{\hypersetup,\fdu_hyperref_setup:n}
+% \pkg{hyperref} 宏包是在导言区之后才引入的。若要在导言区中使用
+% \tn{hypersetup} 命令，必须另行定义。
+%    \begin{macrocode}
+\NewDocumentCommand \hypersetup { m }
+  { \fdu_hyperref_setup:n {#1} }
+\cs_new_protected:Npn \fdu_hyperref_setup:n #1
+  { \clist_gput_right:Nn \g_@@_to_hyperref_clist {#1} }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_set_hyperlink_color_key:n}
+% 设置超链接颜色选项。最后的逗号用于确保 \pkg{l3keys} 可以正确解析，不能省去。
+%    \begin{macrocode}
+\cs_new:Npn \@@_set_hyperlink_color_key:n #1
+  {
+    hyperlink-color / \clist_item:nn {#1} {1} .code:n =
+      {
+        \@@_define_hyperlink_color:nnn
+          { \clist_item:nn {#1} {2} }
+          { \clist_item:nn {#1} {3} }
+          { \clist_item:nn {#1} {4} }
+        \fdu_hyperref_setup:n
+          {
+            linkcolor = fdu@link, linkbordercolor = fdu@link,
+            urlcolor  = fdu@url,  urlbordercolor  = fdu@url,
+            citecolor = fdu@cite, citebordercolor = fdu@cite
+          }
+      },
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@@_define_hyperlink_color:nnn}
+% 定义超链接颜色。
+%    \begin{macrocode}
+\cs_new_protected:Npn \@@_define_hyperlink_color:nnn #1#2#3
+  {
+    \definecolorset { HTML } { fdu@ } { }
+      { link, #1; url, #2; cite, #3 }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+%    \begin{macrocode}
+\keys_define:nx { fdu / style }
+  {
+%    \end{macrocode}
+%
+% \begin{macro}{style/hyperlink}
+% 超链接样式。
+%    \begin{macrocode}
+    hyperlink .choice:,
+    hyperlink .value_required:n = true,
+    hyperlink / border .code:n = { },
+    hyperlink / color  .code:n =
+      { \fdu_hyperref_setup:n { colorlinks = true } },
+    hyperlink / none   .code:n =
+      { \fdu_hyperref_setup:n { hidelinks  = true } },
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{style/hyperlink-color}
+% 超链接颜色。
+%    \begin{macrocode}
+    hyperlink-color .choice:,
+    hyperlink-color .value_required:n = true,
+    \clist_map_function:nN
+      {
+        { autumn,    D70000, D75F00, AF8700 },
+        { business,  D14542, 295497, 1F6E43 },
+        { classic,   FF0000, 0000FF, 00FF00 },
+        { default,   990000, 0000B2, 007F00 },
+        { elegant,   961212, C31818, 9B764F },
+        { fantasy,   FF4A19, FF3F94, 934BA1 },
+        { material,  E91E63, 009688, 4CAF50 },
+        { science,   CA0619, 389F9D, FF8920 },
+        { summer,    00AFAF, 5F5FAF, 5F8700 },
+        { graylevel, 616161, 616161, 616161 },
+        { prl,       2D3092, 2D3092, 2D3092 }
+      }
+      \@@_set_hyperlink_color_key:n
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \changes{v0.6}{2017/10/29}{优化 URL 断行设置。}
+%
+% \begin{macro}{\fdu_allow_url_break:,\@@_add_url_break_points:}
+% 允许 URL 在字母、数字和一些特殊符号处断行。见
+% \url{https://bit.ly/2hhIjLW}。
+%    \begin{macrocode}
+\cs_new:Npn \fdu_allow_url_break:
+  {
+    \cs_new:Npn \@@_add_url_break_points:
+      { \tl_map_function:NN \c_@@_url_break_points_tl \do }
+    \@@_appto_cmd:Nn \UrlBreaks
+      { \UrlOrds \@@_add_url_break_points: }
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{variable}{\c_@@_url_break_points_tl}
+% 额外的断行位置是 26 个英文字母（大小写）以及 10 个阿拉伯数字。
+% \pkg{url} 提供的宏 \tn{UrlBreaks} 还包含了特殊符号 |*|、|-|、
+% |~|、|'|、|"|、|-|，也被设置为允许断行。
+%    \begin{macrocode}
+\tl_const:Nn \c_@@_url_break_points_tl
+  {
+    abcdefghijklmnopqrstuvwxyz
+    ABCDEFGHIJKLMNOPQRSTUVWXYZ
+    0123456789
+  }
+%    \end{macrocode}
+% \end{variable}
+%
+% 在导言区末尾引入 \pkg{hyperref} 宏包。
+%    \begin{macrocode}
+\ctex_at_end_preamble:n
+  {
+    \RequirePackage { hyperref }
+%    \end{macrocode}
+% 此后 \tn{hypersetup} 命令由 \pkg{hyperref} 宏包接管。
+%    \begin{macrocode}
+    \hypersetup
+      {
+        bookmarksnumbered = true,
+%    \end{macrocode}
+% 填写 PDF 元信息。
+%    \begin{macrocode}
+%<*class>
+        pdftitle    = \l_@@_info_title_tl,
+        pdfauthor   = \l_@@_info_author_tl,
+        pdfkeywords = \l_@@_info_keywords_clist,
+%</class>
+%<*class-en>
+        pdftitle    = \l_@@_info_title_en_tl,
+        pdfauthor   = \l_@@_info_author_en_tl,
+        pdfkeywords = \l_@@_info_keywords_en_clist,
+%</class-en>
+%       pdfsubject  = ,
+        pdfcreator  = \c_@@_name_pdf_creator_tl
+      }
+%    \end{macrocode}
+% 将导言区中通过 \cs{fdu_hyperref_setup:n} 进行的设置传入
+% \tn{hypersetup}。
+%    \begin{macrocode}
+    \exp_args:NV \hypersetup \g_@@_to_hyperref_clist
+%    \end{macrocode}
+% URL 断行处理。
+%    \begin{macrocode}
+    \fdu_allow_url_break:
+%    \end{macrocode}
+% 手动开启 \pkg{biblatex} 的 \pkg{hyperref} 支持。
+%    \begin{macrocode}
+    \bool_if:NF \l_@@_bibtex_bool { \BiblatexManualHyperrefOn }
+  }
+%    \end{macrocode}
+%
+% 在 PDF 字符串中设置 \tn{fdu@kai} 命令为空，以抑制 \pkg{hyperref}
+% 的警告信息。
+%    \begin{macrocode}
+\ctex_at_end_package:nn { hyperref }
+  {
+    \pdfstringdefDisableCommands
+      {
+        \cs_set_eq:NN \fdu@kai \prg_do_nothing:
+        \cs_set_eq:NN \quad    \c_space_tl
+        \cs_set_eq:NN \qquad   \c_space_tl
+      }
+  }
+%    \end{macrocode}
+%
+% \subsection{用户接口}
+%
+% \begin{macro}{info,style}
+% 定义元（meta）键值对。
+%    \begin{macrocode}
+\keys_define:nn { fdu }
+  {
+    info  .meta:nn = { fdu / info  } {#1},
+    style .meta:nn = { fdu / style } {#1}
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% 文档类初始设置。
+%    \begin{macrocode}
+\keys_set:nn { fdu }
+  {
+    style   / font            = times,
+%<class>    style   / cjk-font        = fandol,
+    style   / font-size       = -4,
+%<class>    style   / fullwidth-stop  = false,
+    style   / auto-make-cover = true,
+    style   / logo            = { fudan-name.pdf },
+    style   / logo-size       = { 0.5 \textwidth },
+    style   / hyperlink       = color,
+    style   / hyperlink-color = default,
+    style   / bib-style       = numerical,
+    info    / degree          = academic,
+    info    / secret-level    = none,
+    info    / school-id       = { 10246 },
+    info    / date            = { \zhtoday },
+%<class>    theorem / header-font     = { \sffamily },
+%<class-en>    theorem / header-font     = { \bfseries \upshape },
+%<class>    theorem / body-font       = { \fdu@kai },
+%<class-en>    theorem / body-font       = { \itshape },
+    theorem / counter         = { chapter }
+  }
+%    \end{macrocode}
+%
+% \begin{macro}{\fdusetup}
+% 用户设置接口。
+%    \begin{macrocode}
+\NewDocumentCommand \fdusetup { m }
+  { \keys_set:nn { fdu } {#1} }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{environment}{proof}
+% \begin{environment}{axiom}
+% \begin{environment}{corollary}
+% \begin{environment}{definition}
+% \begin{environment}{example}
+% \begin{environment}{lemma}
+% \begin{environment}{theorem}
+% 模板预定义的常用数学环境。
+% 其中的“证明”比较特殊，它不编号，但会添加证毕符号。
+%    \begin{macrocode}
+%<*class>
+\newtheorem* { proof       } { \c_@@_name_proof_tl      }
+\newtheorem  { axiom       } { \c_@@_name_axiom_tl      }
+\newtheorem  { corollary   } { \c_@@_name_corollary_tl  }
+\newtheorem  { definition  } { \c_@@_name_definition_tl }
+\newtheorem  { example     } { \c_@@_name_example_tl    }
+\newtheorem  { lemma       } { \c_@@_name_lemma_tl      }
+\newtheorem  { theorem     } { \c_@@_name_theorem_tl    }
+%</class>
+%<*class-en>
+\newtheorem* { proof       } { \c_@@_name_proof_en_tl      }
+\newtheorem  { axiom       } { \c_@@_name_axiom_en_tl      }
+\newtheorem  { corollary   } { \c_@@_name_corollary_en_tl  }
+\newtheorem  { definition  } { \c_@@_name_definition_en_tl }
+\newtheorem  { example     } { \c_@@_name_example_en_tl    }
+\newtheorem  { lemma       } { \c_@@_name_lemma_en_tl      }
+\newtheorem  { theorem     } { \c_@@_name_theorem_en_tl    }
+%</class-en>
+%</class|class-en>
+%    \end{macrocode}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+%
+% \subsection{模板参数配置文件}
+%
+% \changes{v0.3}{2017/06/27}{分离文档类与参数配置文件。}
+%
+%    \begin{macrocode}
+%<*definition>
+%    \end{macrocode}
+%
+% \subsubsection{通用配置}
+%
+% \begin{variable}{\c_@@_name_simp_tl,\c_@@_name_trad_tl,
+%   \c_@@_name_en_tl}
+% 学校名称。
+%    \begin{macrocode}
+\tl_const:Nn \c_@@_name_simp_tl { 复旦大学          }
+\tl_const:Nn \c_@@_name_trad_tl { 復旦大學          }
+\tl_const:Nn \c_@@_name_en_tl   { Fudan~ University }
+%    \end{macrocode}
+% \end{variable}
+%
+% 常用标点符号，见表~\ref{tab:punctuations}。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    { ideographic_comma     } { "3001 },
+    { ideographic_full_stop } { "3002 },
+    { fullwidth_comma       } { "FF0C },
+    { fullwidth_full_stop   } { "FF0E },
+    { fullwidth_colon       } { "FF1A },
+    { fullwidth_semicolon   } { "FF1B },
+    { fullwidth_left_paren  } { "FF08 },
+    { fullwidth_right_paren } { "FF09 }
+  }
+  { \@@_define_punct:nn #1 }
+%    \end{macrocode}
+%
+% \begin{table}[ht]
+%   \caption{常用标点符号}
+%   \label{tab:punctuations}
+%   \centering
+%   \begin{tabular}{cccc}
+%     \toprule
+%       \textbf{中文名称} & \textbf{英文名称} & \textbf{符号} & \textbf{Unicode} \\
+%     \midrule
+%       中文顿号     & Ideographic comma           & \symbol{"3001} & U+3001 \\
+%       中文句号     & Ideographic full stop       & \symbol{"3002} & U+3002 \\
+%       中文逗号     & Fullwidth comma             & \symbol{"FF0C} & U+FF0C \\
+%       全角西文句点 & Fullwidth full stop         & \symbol{"FF0E} & U+FF0E \\
+%       中文冒号     & Fullwidth colon             & \symbol{"FF1A} & U+FF1A \\
+%       中文分号     & Fullwidth semicolon         & \symbol{"FF1B} & U+FF1B \\
+%       中文左圆括号 & Fullwidth left parenthesis  & \symbol{"FF08} & U+FF08 \\
+%       中文右圆括号 & Fullwidth right parenthesis & \symbol{"FF09} & U+FF09 \\
+%     \bottomrule
+%   \end{tabular}
+% \end{table}
+%
+% \begin{variable}{\c_@@_line_spread_fp}
+% 行距倍数。行距倍数 $k$ 由下式确定：
+% \begin{equation*}
+%   \num{1.2} \times k \times \SI{12}{bp} = \SI{20}{pt}.
+% \end{equation*}
+% 式中，\num{1.2} 是基本行距与文字大小之比，\SI{12}{bp} 是小四号字
+% 的大小，\SI{20}{pt} 是行距固定值。
+%    \begin{macrocode}
+\fp_const:Nn \c_@@_line_spread_fp
+  { \dim_ratio:nn { 20 pt } { 12 bp } / 1.2 }
+%    \end{macrocode}
+% \end{variable}
+%
+% \subsubsection{声明页}
+%
+% \begin{variable}{\c_@@_orig_decl_text_tl}
+% 论文独创性声明。
+%    \begin{macrocode}
+\tl_const:Nn \c_@@_orig_decl_text_tl
+  {
+    本人郑重声明：所呈交的学位论文，是本人在导师的指导下，独立进行研究
+    工作所取得的成果。论文中除特别标注的内容外，不包含任何其他个人或机
+    构已经发表或撰写过的研究成果。对本研究做出重要贡献的个人和集体，均
+    已在论文中作了明确的声明并表示了谢意。本声明的法律结果由本人承担。
+  }
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\c_@@_auth_decl_text_tl}
+% 论文使用授权声明。
+%    \begin{macrocode}
+\tl_const:Nn \c_@@_auth_decl_text_tl
+  {
+    本人完全了解复旦大学有关收藏和利用博士、硕士学位论文的规定，即：学
+    校有权收藏、使用并向国家有关部门或机构送交论文的印刷本和电子版本；
+    允许论文被查阅和借阅；学校可以公布论文的全部或部分内容，可以采用影
+    印、缩印或其它复制手段保存论文。涉密学位论文在解密后遵守此规定。
+  }
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\c_@@_orig_decl_sign_clist,
+%   \c_@@_auth_decl_sign_clist}
+% 声明页签名项目。
+%    \begin{macrocode}
+\clist_const:Nn \c_@@_orig_decl_sign_clist
+  { 作者签名, 日期 }
+\clist_const:Nn \c_@@_auth_decl_sign_clist
+  { 作者签名, 导师签名, 日期 }
+%    \end{macrocode}
+% \end{variable}
+%
+% \subsubsection{杂项}
+%
+% \begin{variable}{\c_@@_thesis_type_clist,
+%   \c_@@_degree_type_clist}
+% 论文类型与学位类型。
+%    \begin{macrocode}
+\clist_const:Nn \c_@@_thesis_type_clist
+  { 博士学位论文, 硕士学位论文, 本科毕业论文 }
+\clist_const:Nn \c_@@_degree_type_clist
+  { 学术学位, 专业学位 }
+%    \end{macrocode}
+% \end{variable}
+%
+% \begin{variable}{\c_@@_secret_clist}
+% 三种密级。
+%    \begin{macrocode}
+\clist_const:Nn \c_@@_secret_clist { 秘密, 机密, 绝密 }
+%    \end{macrocode}
+% \end{variable}
+%
+% 默认名称。注意空格是忽略掉的。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    { secret_level    } { 密 \qquad 级                  },
+    { secret_star     } { \textrm { \bigstar }          },
+    { school_id       } { 学校代码                      },
+    { student_id      } { 学 \qquad 号                  },
+    { department      } { 院系                          },
+    { major           } { 专业                          },
+    { author          } { 姓名                          },
+    { supervisor      } { 指导教师                      },
+    { date            } { 完成日期                      },
+    { instructors     } { 指导小组成员                  },
+    { author_sign     } { 作者签名                      },
+    { supervisor_sign } { 导师签名                      },
+    { sign_date       } { 日期                          },
+    { bib_en          } { Bibliography                  },
+    { pdf_creator     } { LaTeX~ with~ fduthesis~ class },
+    { orig_decl       } { \c_@@_name_simp_tl \\ 学位论文独创性声明   },
+    { auth_decl       } { \c_@@_name_simp_tl \\ 学位论文使用授权声明 }
+  }
+  { \@@_define_name:nn #1 }
+\clist_map_inline:nn
+  {
+    { abstract } { 摘 \quad 要 } { Abstract          },
+    { keywords } { 关键字      } { Keywords:         },
+    { clc      } { 中图分类号  } { CLC~ number:      },
+    { toc      } { 目 \quad 录 } { Contents          },
+    { notation } { 符号表      } { List~ of~ Symbols }
+  }
+  { \@@_define_name:nnn #1 }
+%    \end{macrocode}
+%
+% 默认定理头名称。
+%    \begin{macrocode}
+\clist_map_inline:nn
+  {
+    { proof      } { 证明 } { Proof      },
+    { axiom      } { 公理 } { Axiom      },
+    { corollary  } { 推论 } { Corollary  },
+    { definition } { 定义 } { Definition },
+    { example    } { 例   } { Example    },
+    { lemma      } { 引理 } { Lemma      },
+    { theorem    } { 定理 } { Theorem    }
+  }
+  { \@@_define_name:nnn #1 }
+%</definition>
+%<@@=>
+%    \end{macrocode}
+%
+% \clearpage
+%
+% \end{implementation}
+%
diff --git a/Master/texmf-dist/source/latex/fduthesis/fduthesis.ins b/Master/texmf-dist/source/latex/fduthesis/fduthesis.ins
new file mode 100644
index 00000000000..e311d716b54
--- /dev/null
+++ b/Master/texmf-dist/source/latex/fduthesis/fduthesis.ins
@@ -0,0 +1,135 @@
+%%
+%% This is file `fduthesis.ins',
+%% generated with the docstrip utility.
+%%
+%% The original source files were:
+%%
+%% fduthesis.dtx  (with options: `install')
+%% 
+%%     Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+%% 
+%%     This work may be distributed and/or modified under the
+%%     conditions of the LaTeX Project Public License, either
+%%     version 1.3c of this license or (at your option) any later
+%%     version. The latest version of this license is in:
+%% 
+%%       http://www.latex-project.org/lppl.txt
+%% 
+%%     and version 1.3 or later is part of all distributions of
+%%     LaTeX version 2005/12/01 or later.
+%% 
+%%     This work has the LPPL maintenance status `maintained'.
+%% 
+%%     The Current Maintainer of this work is Xiangdong Zeng.
+%% 
+%%     This work consists of the files fduthesis.dtx,
+%%                                     fduthesis-doc.dtx,
+%%                                     fduthesis-logo.dtx,
+%%                                     fduthesis-template.tex,
+%%               and the derived files fduthesis.ins,
+%%                                     fduthesis.cls,
+%%                                     fduthesis-en.cls,
+%%                                     fduthesis.def,
+%%                                     fdudoc.cls,
+%%                                     fdulogo.sty,
+%%                                     fdulogo-example.tex,
+%%                                     fduthesis-cover.tex,
+%%                                     fduthesis-en.tex,
+%%                                     fduthesis.pdf,
+%%                                     fduthesis-en.pdf,
+%%                                     fduthesis-code.pdf,
+%%                                     latexmkrc,
+%%                                     latexmkrc-en,
+%%                                 and README.md.
+%% 
+\input l3docstrip.tex
+\keepsilent
+\askforoverwritefalse
+
+\preamble
+
+    Copyright (C) 2017, 2018 by Xiangdong Zeng <xdzeng96@gmail.com>
+
+    This work may be distributed and/or modified under the
+    conditions of the LaTeX Project Public License, either
+    version 1.3c of this license or (at your option) any later
+    version. The latest version of this license is in:
+
+      http://www.latex-project.org/lppl.txt
+
+    and version 1.3 or later is part of all distributions of
+    LaTeX version 2005/12/01 or later.
+
+    This work has the LPPL maintenance status `maintained'.
+
+    The Current Maintainer of this work is Xiangdong Zeng.
+
+    This work consists of the files fduthesis.dtx,
+                                    fduthesis-doc.dtx,
+                                    fduthesis-logo.dtx,
+                                    fduthesis-template.tex,
+              and the derived files fduthesis.ins,
+                                    fduthesis.cls,
+                                    fduthesis-en.cls,
+                                    fduthesis.def,
+                                    fdudoc.cls,
+                                    fdulogo.sty,
+                                    fdulogo-example.tex,
+                                    fduthesis-cover.tex,
+                                    fduthesis-en.tex,
+                                    fduthesis.pdf,
+                                    fduthesis-en.pdf,
+                                    fduthesis-code.pdf,
+                                    latexmkrc,
+                                    latexmkrc-en,
+                                and README.md.
+
+\endpreamble
+
+\generate{
+  \usedir{tex/latex/fduthesis}
+    \file{\jobname.cls}        {\from{\jobname.dtx}{class}}
+    \file{\jobname-en.cls}     {\from{\jobname.dtx}{class-en}}
+    \file{\jobname.def}        {\from{\jobname.dtx}{definition}}
+    \file{fdudoc.cls}          {\from{\jobname.dtx}{doc}
+                                \from{\jobname-doc.dtx}{doc}}
+    \file{fdulogo.sty}         {\from{\jobname.dtx}{logo}
+                                \from{\jobname-logo.dtx}{logo}}
+    \file{fdulogo-example.tex} {\from{\jobname.dtx}{ex-logo}
+                                \from{\jobname-logo.dtx}{ex-logo}}
+    \file{\jobname-cover.tex}  {\from{\jobname.dtx}{cover}
+                                \from{\jobname-logo.dtx}{cover}}
+  \usedir{doc/latex/fduthesis}
+  \nopreamble\nopostamble
+    \file{README.md}           {\from{\jobname.dtx}{readme}}
+    % ``.cfg'' is only for internal/temporal use.
+    % They will be renamed by external scripts.
+    \file{latexmkrc.cfg}       {\from{\jobname-doc.dtx}{latexmk}}
+    \file{latexmkrc-en.cfg}    {\from{\jobname-doc.dtx}{latexmk-en}}
+}
+
+\obeyspaces
+\Msg{*************************************************************}
+\Msg{*                                                           *}
+\Msg{* To finish the installation you have to move the following *}
+\Msg{* files into a directory searched by TeX:                   *}
+\Msg{*                                                           *}
+\Msg{* The recommended directory is TDS:tex/latex/fduthesis      *}
+\Msg{*                                                           *}
+\Msg{*     fduthesis.cls                                         *}
+\Msg{*     fduthesis-en.cls                                      *}
+\Msg{*     fduthesis.def                                         *}
+\Msg{*     fdudoc.cls                                            *}
+\Msg{*     fdulogo.sty                                           *}
+\Msg{*                                                           *}
+\Msg{* To produce the documentation, run the file fduthesis.dtx  *}
+\Msg{* through XeLaTeX.                                          *}
+\Msg{*                                                           *}
+\Msg{* Happy TeXing!                                             *}
+\Msg{*                                                           *}
+\Msg{*************************************************************}
+
+\endbatchfile
+\endinput
+%%
+%% End of file `fduthesis.ins'.