5 files changed, 74 insertions, 39 deletions
diff --git a/Master/texmf-dist/tex/latex/beaulivre/beaulivre.cls b/Master/texmf-dist/tex/latex/beaulivre/beaulivre.cls
index c5e5821c227..79ac9ee080b 100644
--- a/Master/texmf-dist/tex/latex/beaulivre/beaulivre.cls
+++ b/Master/texmf-dist/tex/latex/beaulivre/beaulivre.cls
@@ -17,7 +17,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2020-10-01]
 \ProvidesClass{beaulivre}
-    [2021/06/30 A colorful book style]
+    [2021/07/15 A colorful book style]
 \def\colorclass@baseclass{book}
 \RequirePackage{kvoptions}
 \RequirePackage{etoolbox}
@@ -42,6 +42,7 @@
 \DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{\colorclass@baseclass}}
 \ProcessKeyvalOptions*\relax
 \LoadClass{\colorclass@baseclass}
+
 \if@colorclass@draft
     \@colorclass@fasttrue
 \fi
@@ -97,19 +98,18 @@
     \RequirePackage{draftwatermark}
     \DraftwatermarkOptions{text={\normalfont DRAFT},color=paper!95!-paper}
 \fi
+
 \RequirePackage{colorist}
 
 %%================================
 %% Fonts
 %%================================
-%% Math fonts in fast mode
 \if@colorclass@customfont\else
     \if@colorclass@fast
         \RequirePackage{mathpazo}
     \fi
 \fi
 
-%% English fonts
 \PassOptionsToPackage{no-math}{fontspec}
 \RequirePackage{fontspec}
 \IfFontExistsTF{Palatino Linotype}{%
@@ -133,7 +133,6 @@
         ItalicFont     = cmunst.otf ,
         BoldItalicFont = cmuntb.otf ]
 
-%% Chinese fonts
 \PassOptionsToPackage{fontset=none,scheme=plain}{ctex}
 \RequirePackage{ctex}
 \WarningFilter{everysel}{Everysel is no longer required}
@@ -185,7 +184,6 @@
         SmallCapsFont  = * ]
 }
 
-%% Math font
 \if@colorclass@customfont\else
 \if@colorclass@fast
 \RequirePackage{amssymb}
@@ -215,6 +213,14 @@
 \setmathfont[range={up/num, bfup/num}
             ]{texgyrepagella-math.otf}
 
+\AtBeginDocument{
+\let\mid@original\mid
+\renewcommand{\mid}{\hspace{-.2em}\mid@original\hspace{-.2em}}
+\let\nmid@original\nmid
+\renewcommand{\nmid}{\hspace{-.2em}\nmid@original\hspace{-.2em}}
+}
+
+\RequirePackage{tikz-cd}
 \newbox\xratbelow
 \newbox\xratabove
 \renewcommand{\xrightarrow}[2][]{%
@@ -273,6 +279,7 @@
         \draw (0,0) edge[commutative diagrams/equal] node[below=3pt] {\box\xratbelow}
         node[above=2pt] {\box\xratabove}
         (\xratlen,0) ;}}
+
 \AtBeginDocument{
 \renewcommand{\twoheadrightarrow}{%
     \mathrel{\tikz [baseline=-.55ex, every node/.style={inner sep=0pt}]
@@ -344,7 +351,6 @@
 
 \def\PJL@font@alreadyset{}
 
-%% Minor improvements
 \PassOptionsToPackage{verbose=silent}{microtype}
 \RequirePackage{microtype}
 \PassOptionsToPackage{all}{nowidow}
diff --git a/Master/texmf-dist/tex/latex/colorist/colorart.cls b/Master/texmf-dist/tex/latex/colorist/colorart.cls
index 27ad53e79fc..8db263ddcab 100644
--- a/Master/texmf-dist/tex/latex/colorist/colorart.cls
+++ b/Master/texmf-dist/tex/latex/colorist/colorart.cls
@@ -17,7 +17,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2020-10-01]
 \ProvidesClass{colorart}
-    [2021/06/30 A colorful article style]
+    [2021/07/15 A colorful article style]
 \def\colorclass@baseclass{article}
 \RequirePackage{kvoptions}
 \RequirePackage{etoolbox}
@@ -42,6 +42,7 @@
 \DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{\colorclass@baseclass}}
 \ProcessKeyvalOptions*\relax
 \LoadClass{\colorclass@baseclass}
+
 \if@colorclass@draft
     \@colorclass@fasttrue
 \fi
@@ -97,6 +98,7 @@
     \RequirePackage{draftwatermark}
     \DraftwatermarkOptions{text={\normalfont DRAFT},color=paper!95!-paper}
 \fi
+
 \RequirePackage{colorist}
 
 %%================================
@@ -172,7 +174,6 @@
 
 \def\PJL@font@alreadyset{}
 
-%% Minor improvements
 \PassOptionsToPackage{verbose=silent}{microtype}
 \RequirePackage{microtype}
 \PassOptionsToPackage{all}{nowidow}
diff --git a/Master/texmf-dist/tex/latex/colorist/colorbook.cls b/Master/texmf-dist/tex/latex/colorist/colorbook.cls
index 385484730b2..632f9968205 100644
--- a/Master/texmf-dist/tex/latex/colorist/colorbook.cls
+++ b/Master/texmf-dist/tex/latex/colorist/colorbook.cls
@@ -17,7 +17,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2020-10-01]
 \ProvidesClass{colorbook}
-    [2021/06/30 A colorful book style]
+    [2021/07/15 A colorful book style]
 \def\colorclass@baseclass{book}
 \RequirePackage{kvoptions}
 \RequirePackage{etoolbox}
@@ -42,6 +42,7 @@
 \DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{\colorclass@baseclass}}
 \ProcessKeyvalOptions*\relax
 \LoadClass{\colorclass@baseclass}
+
 \if@colorclass@draft
     \@colorclass@fasttrue
 \fi
@@ -97,6 +98,7 @@
     \RequirePackage{draftwatermark}
     \DraftwatermarkOptions{text={\normalfont DRAFT},color=paper!95!-paper}
 \fi
+
 \RequirePackage{colorist}
 
 %%================================
@@ -172,7 +174,6 @@
 
 \def\PJL@font@alreadyset{}
 
-%% Minor improvements
 \PassOptionsToPackage{verbose=silent}{microtype}
 \RequirePackage{microtype}
 \PassOptionsToPackage{all}{nowidow}
diff --git a/Master/texmf-dist/tex/latex/colorist/colorist.sty b/Master/texmf-dist/tex/latex/colorist/colorist.sty
index eb00dcd4647..3a610e4943c 100644
--- a/Master/texmf-dist/tex/latex/colorist/colorist.sty
+++ b/Master/texmf-dist/tex/latex/colorist/colorist.sty
@@ -17,7 +17,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2020-10-01]
 \ProvidesPackage{colorist}
-    [2021/06/30 A colorful style for articles and books]
+    [2021/07/15 A colorful style for articles and books]
 \RequirePackage{kvoptions}
 \RequirePackage{etoolbox}
 \SetupKeyvalOptions{%
@@ -56,6 +56,7 @@
 %% Title fonts
 %%================================
 \RequirePackage{anyfontsize}
+
 \newcommand{\partfont}{\conditionalbfseries\colorist@sffamily}
 \newcommand{\chapfont}{\conditionalbfseries\colorist@sffamily}
 \newcommand{\secfont}{\conditionalbfseries\colorist@sffamily}
@@ -80,7 +81,9 @@
 \RequirePackage{geometry}
 \RequirePackage{fancyhdr}
 \RequirePackage{extramarks}
+
 \AtEndPreamble{\fancyhfoffset{0pt}}
+
 \fancypagestyle{fancy}{
     \fancyhf{}
     \if@twoside
@@ -96,6 +99,7 @@
     \renewcommand{\headrulewidth}{0pt}
 }
 \pagestyle{fancy}
+
 \fancypagestyle{plain}{
     \fancyhf{}
     \if@twoside
@@ -109,6 +113,7 @@
     \fi
     \renewcommand{\headrulewidth}{0pt}
 }
+
 \ifbool{IsBook}{
     \if@twoside
         \renewcommand{\chaptermark}[1]{\markboth{\textsc{#1}}{}}
@@ -125,7 +130,7 @@
     \fi
 }
 %%================================
-%% Line spacing
+%% Languages and line spacing
 %%================================
 \RequirePackage{PJLlang}
 \PJLsetlinespacing{\setstretch{1.07}}
@@ -310,7 +315,7 @@
 \titlecontents{part}
     [0em]
     {\addvspace{1.5pc}\filcenter\colorist@sffamily}
-    {\thecontentslabel\\\uppercase}
+    {\thecontentslabel\nopagebreak\\\nopagebreak\uppercase}
     {}
     {} % without page number
     [\addvspace{.5pc}]
@@ -364,11 +369,21 @@
 %% Lists
 %%================================
 \RequirePackage{enumitem}
-\setlist{noitemsep,leftmargin=2em}
-\gappto{\PJLlang@langconfig@common}{\renewcommand\labelitemi{\textcolor{maintext!25}{$\bullet$}}}
-\gappto{\PJLlang@langconfig@french}{\renewcommand\labelitemi{\textcolor{maintext!50}{---}}}
-\renewcommand\labelitemii{\textcolor{maintext!27}{--}}
-\renewcommand\labelitemiii{\textcolor{maintext!27}{\texttt{*}}}
+\setlist{noitemsep}
+\setlist[enumerate]{labelsep=*, leftmargin=*}
+\setlist[enumerate,1]{label = \arabic*.,
+    ref = \arabic*}
+\setlist[enumerate,2]{label = \emph{\alph*}),
+    ref = \theenumi.\emph{\alph*}}
+\setlist[enumerate,3]{label = (\roman*),
+    ref = \theenumii.\roman*}
+\setlist[description]{font=\normalfont\conditionalbfseries}
+
+\setlist[itemize]{leftmargin=*}
+\gappto{\PJLlang@langconfig@common}{\setlist[itemize,1]{label=\textcolor{maintext!25}{$\bullet$}}}
+\gappto{\PJLlang@langconfig@french}{\setlist[itemize,1]{label=\textcolor{maintext!50}{---}}}
+\setlist[itemize,2]{label=\textcolor{maintext!27}{--}}
+\setlist[itemize,3]{label=\textcolor{maintext!27}{\texttt{*}}}
 
 %%================================
 %% Blank page
@@ -440,8 +455,9 @@
         \color{maintext!50!paper}\thmnote{\ensuremath{(\text{#3})}~~}%
         \pushQED{\qed}%
     }
-\def\@endtheorem{\popQED\endtrivlist\@endpefalse
-\global\let\qedsymbol\qedsymbolOriginal}
+\def\@endtheorem{\global\let\qedsymbol\simpleqedsymbol%
+    \popQED\endtrivlist\@endpefalse
+    \global\let\qedsymbol\qedsymbolOriginal}
 
 \renewcommand{\qedsymbol}{%
     \makebox[1em]{\color{maintext!27!paper}\rule[-0.1em]{.95em}{.95em}}}
@@ -470,7 +486,6 @@
 \PassOptionsToPackage{nothms}{PJLthm}
 \RequirePackage{PJLthm}
 
-%% Adjust English theorems names
 \pretocmd{\theoremnameEN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameEN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameEN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -493,7 +508,6 @@
 \expandafter\def\csname definition-propositionnameEN\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definition}-\propositionnameEN}
 \expandafter\def\csname definition-theoremnameEN\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definition}-\theoremnameEN}
 
-%% Adjust French theorems names
 \pretocmd{\theoremnameFR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameFR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameFR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -516,7 +530,6 @@
 \expandafter\def\csname definition-propositionnameFR\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Définition}-\propositionnameFR}
 \expandafter\def\csname definition-theoremnameFR\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Définition}-\theoremnameFR}
 
-%% Adjust German theorems names
 \pretocmd{\theoremnameDE}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameDE}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameDE}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -539,7 +552,6 @@
 \expandafter\def\csname definition-propositionnameDE\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definition}-\propositionnameDE}
 \expandafter\def\csname definition-theoremnameDE\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definition}-\theoremnameDE}
 
-%% Adjust Italian theorems names
 \pretocmd{\theoremnameIT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameIT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameIT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -562,7 +574,6 @@
 \expandafter\def\csname definition-propositionnameIT\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definizione}-\propositionnameIT}
 \expandafter\def\csname definition-theoremnameIT\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definizione}-\theoremnameIT}
 
-%% Adjust Portuguese theorems names
 \pretocmd{\theoremnamePT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanamePT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnamePT}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -585,7 +596,6 @@
 \expandafter\def\csname definition-propositionnamePT\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\propositionnamePT}
 \expandafter\def\csname definition-theoremnamePT\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\theoremnamePT}
 
-%% Adjust Brazilian theorems names
 \pretocmd{\theoremnameBR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameBR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameBR}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -608,7 +618,6 @@
 \expandafter\def\csname definition-propositionnameBR\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\propositionnameBR}
 \expandafter\def\csname definition-theoremnameBR\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\theoremnameBR}
 
-%% Adjust Spanish theorems names
 \pretocmd{\theoremnameES}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\lemmanameES}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
 \pretocmd{\propositionnameES}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc}{}{\FAIL}
@@ -631,7 +640,6 @@
 \expandafter\def\csname definition-propositionnameES\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\propositionnameES}
 \expandafter\def\csname definition-theoremnameES\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries\colorist@textsc{Definição}-\theoremnameES}
 
-%% Adjust Chinese theorems names
 \pretocmd{\theoremnameCN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\lemmanameCN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\propositionnameCN}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
@@ -676,7 +684,6 @@
 \expandafter\def\csname definition-propositionnameTC\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{定義}-\propositionnameTC}
 \expandafter\def\csname definition-theoremnameTC\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{定義}-\theoremnameTC}
 
-%% Adjust Japanese theorems names
 \pretocmd{\theoremnameJP}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\lemmanameJP}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\propositionnameJP}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
@@ -699,7 +706,6 @@
 \expandafter\def\csname definition-propositionnameJP\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{定義}-\propositionnameJP}
 \expandafter\def\csname definition-theoremnameJP\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{定義}-\theoremnameJP}
 
-%% Adjust Russian theorems names
 \pretocmd{\theoremnameRU}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\lemmanameRU}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
 \pretocmd{\propositionnameRU}{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries}{}{\FAIL}
@@ -722,7 +728,6 @@
 \expandafter\def\csname definition-propositionnameRU\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{Определение}-\propositionnameRU}
 \expandafter\def\csname definition-theoremnameRU\endcsname{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries{Определение}-\theoremnameRU}
 
-%% Theorem environments
 \theoremstyle{basic}
 \ifbool{IsBook}{
     \newaliascnt{highest}{chapter}
@@ -808,7 +813,6 @@
 
 \numberwithin{equation}{highest}
 
-%% Cref label format
 \creflabelformat{PJLtheorem}{#2{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries#1}#3}
 \creflabelformat{PJLlemma}{#2{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries#1}#3}
 \creflabelformat{PJLproposition}{#2{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries#1}#3}
@@ -1049,7 +1053,6 @@
 \creflabelformat{definition-theoremRU}{#2{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries#1}#3}
 \creflabelformat{definition-propositionRU}{#2{\normalfont\colorist@sffamily\color{orange}\conditionalbfseries#1}#3}
 
-%% Icons on the margin
 \RequirePackage{marginnote}
 \RequirePackage{ifoddpage}
 \newcommand{\mparadjust}[1]{\renewcommand*{\marginnotevadjust}{#1}}
@@ -1282,12 +1285,30 @@
     {enhanced jigsaw,pad at break*=1mm,breakable,colback=yellow!25!paper,
     boxrule=0pt,frame hidden,arc=.7mm}
 
+\tcolorboxenvironment{question}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
+\tcolorboxenvironment{question*}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
+\tcolorboxenvironment{exercise}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
+\tcolorboxenvironment{exercise*}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
 \tcolorboxenvironment{remark}
     {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
     opacityframe=0,opacityback=0,lines before break=3}
 \tcolorboxenvironment{remark*}
     {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
     opacityframe=0,opacityback=0,lines before break=3}
+\tcolorboxenvironment{observation}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
+\tcolorboxenvironment{observation*}
+    {enhanced jigsaw,pad at break*=1mm,breakable,oversize,
+    opacityframe=0,opacityback=0,lines before break=3}
 
 \ExplSyntaxOn
 \NewDocumentCommand \AfterEnvEnd { +m }
diff --git a/Master/texmf-dist/tex/latex/lebhart/lebhart.cls b/Master/texmf-dist/tex/latex/lebhart/lebhart.cls
index 29a4088e809..4221ba16be1 100644
--- a/Master/texmf-dist/tex/latex/lebhart/lebhart.cls
+++ b/Master/texmf-dist/tex/latex/lebhart/lebhart.cls
@@ -17,7 +17,7 @@
 %% 
 \NeedsTeXFormat{LaTeX2e}[2020-10-01]
 \ProvidesClass{lebhart}
-    [2021/06/30 A colorful article style]
+    [2021/07/15 A colorful article style]
 \def\colorclass@baseclass{article}
 \RequirePackage{kvoptions}
 \RequirePackage{etoolbox}
@@ -42,6 +42,7 @@
 \DeclareDefaultOption{\PassOptionsToClass{\CurrentOption}{\colorclass@baseclass}}
 \ProcessKeyvalOptions*\relax
 \LoadClass{\colorclass@baseclass}
+
 \if@colorclass@draft
     \@colorclass@fasttrue
 \fi
@@ -97,19 +98,18 @@
     \RequirePackage{draftwatermark}
     \DraftwatermarkOptions{text={\normalfont DRAFT},color=paper!95!-paper}
 \fi
+
 \RequirePackage{colorist}
 
 %%================================
 %% Fonts
 %%================================
-%% Math fonts in fast mode
 \if@colorclass@customfont\else
     \if@colorclass@fast
         \RequirePackage{mathpazo}
     \fi
 \fi
 
-%% English fonts
 \PassOptionsToPackage{no-math}{fontspec}
 \RequirePackage{fontspec}
 \IfFontExistsTF{Palatino Linotype}{%
@@ -133,7 +133,6 @@
         ItalicFont     = cmunst.otf ,
         BoldItalicFont = cmuntb.otf ]
 
-%% Chinese fonts
 \PassOptionsToPackage{fontset=none,scheme=plain}{ctex}
 \RequirePackage{ctex}
 \WarningFilter{everysel}{Everysel is no longer required}
@@ -185,7 +184,6 @@
         SmallCapsFont  = * ]
 }
 
-%% Math font
 \if@colorclass@customfont\else
 \if@colorclass@fast
 \RequirePackage{amssymb}
@@ -215,6 +213,14 @@
 \setmathfont[range={up/num, bfup/num}
             ]{texgyrepagella-math.otf}
 
+\AtBeginDocument{
+\let\mid@original\mid
+\renewcommand{\mid}{\hspace{-.2em}\mid@original\hspace{-.2em}}
+\let\nmid@original\nmid
+\renewcommand{\nmid}{\hspace{-.2em}\nmid@original\hspace{-.2em}}
+}
+
+\RequirePackage{tikz-cd}
 \newbox\xratbelow
 \newbox\xratabove
 \renewcommand{\xrightarrow}[2][]{%
@@ -273,6 +279,7 @@
         \draw (0,0) edge[commutative diagrams/equal] node[below=3pt] {\box\xratbelow}
         node[above=2pt] {\box\xratabove}
         (\xratlen,0) ;}}
+
 \AtBeginDocument{
 \renewcommand{\twoheadrightarrow}{%
     \mathrel{\tikz [baseline=-.55ex, every node/.style={inner sep=0pt}]
@@ -344,7 +351,6 @@
 
 \def\PJL@font@alreadyset{}
 
-%% Minor improvements
 \PassOptionsToPackage{verbose=silent}{microtype}
 \RequirePackage{microtype}
 \PassOptionsToPackage{all}{nowidow}