bidi (16jan17)

git-svn-id: svn://tug.org/texlive/trunk@42967 c570f23f-e606-0410-a88d-b1316a301751

2 files changed, 108 insertions, 78 deletions

diff --git a/Master/texmf-dist/source/xelatex/bidi/bidi.dtx b/Master/texmf-dist/source/xelatex/bidi/bidi.dtx
index 6e9d3d9bfa0..712f71a0098 100644
--- a/Master/texmf-dist/source/xelatex/bidi/bidi.dtx
+++ b/Master/texmf-dist/source/xelatex/bidi/bidi.dtx
@@ -5,7 +5,7 @@
 %<*readme>
 ___________________
 The bidi package
-v20.6
+v20.7
 
 This package provides a convenient interface for typesetting
 bidirectional texts in Plain TeX and LaTeX, using XeTeX engine.
@@ -25,13 +25,13 @@ a minimal working example showing the issue, and always choose the appropriate
 label for your query (i.e. if you are reporting any bugs, choose `Bug' label). 
 
 
-Current version release date: 2016/11/30
+Current version release date: 2017/01/16
 
 ___________________
 Vafa Khalighi
 persian-tex@tug.org
 
-Copyright (c) 2007--2016
+Copyright (c) 2007--2017
 It may be distributed and/or modified under the LaTeX Project Public License,
 version 1.3c or higher (your choice). The latest version of
 this license is at: http://www.latex-project.org/lppl.txt
@@ -49,7 +49,7 @@ by Vafa Khalighi.
 \preamble
 
   __________________________________________________
-  Copyright (c) 2009--2016  Vafa Khalighi <persian-tex@tug.org>
+  Copyright (c) 2009--2017  Vafa Khalighi <persian-tex@tug.org>
 
   It may be distributed and/or modified under the LaTeX Project Public License,
   version 1.3c or higher (your choice). The latest version of
@@ -321,7 +321,7 @@ by Vafa Khalighi.
 %\changes{v13.9}{2013/09/23}{Added implementaion of the package.}
 % \title{\textcolor{blue!65!black}{\Huge The \textsf{bidi} \textit{Package}}\\
 %\LARGE Bidirectional typesetting in plain \TeX{} and \LaTeX, using \XeTeX{} engine\\[5pt]
-%\large Documentation for \textcolor{blue!65!black}{version 20.6}}
+%\large Documentation for \textcolor{blue!65!black}{version 20.7}}
 % \author{Vafa Khalighi\\
 %  \url{persian-tex@tug.org}}
 %\setcounter{page}{0}
@@ -332,7 +332,7 @@ by Vafa Khalighi.
 %\textcolor{blue!65!black}{\Huge The \textsf{bidi} \textit{Package}}
 %
 %\Large
-%Documentation for \textcolor{blue!65!black}{version 20.6}}
+%Documentation for \textcolor{blue!65!black}{version 20.7}}
 %
 %\vskip 0pt plus 3fill
 %\textit{\large to my Master, \textbf{Ferdowsi The Great}}
@@ -356,7 +356,7 @@ by Vafa Khalighi.
 %
 %\vskip 0pt plus 3fill
 %
-%Copyright (c) 2007--2016 Vafa Khalighi
+%Copyright (c) 2007--2017 Vafa Khalighi
 %
 %\medskip
 %Permission is granted to distribute and/or modify \emph{both the documentation and the code} under the conditions of the \LaTeX{} Project Public License, either version 1.3c of this license or (at your option) any later version.
@@ -381,9 +381,9 @@ by Vafa Khalighi.
 %* and LaTeX. The package includes adaptations
 %* for use with many other commonly-used packages.
 %* 
-%* Copyright (c) 2009--2016 Vafa Khalighi
+%* Copyright (c) 2009--2017 Vafa Khalighi
 %* 
-%* 2016/11/30, v20.6
+%* 2017/01/16, v20.7
 %* 
 %* License: LaTeX Project Public License, version
 %* 1.3c or higher (your choice)
@@ -855,7 +855,6 @@ by Vafa Khalighi.
 %\begin{BDef}
 %\Lcs{LTRsidenote}\quad\Lcs{RTLsidenote}\quad\Lcs{LTRmarginnote}\quad\Lcs{RTLmarginnote}
 %\end{BDef}
-%\item  \textsf{biditufte-book} and \textsf{biditufte-handout} classes provide two extra options; \textsf{RTLgeometry} (active when loading either of classes) and \textsf{LTRgeometry}.
 %\item \textsf{biditufte} bundle unlike \textsf{tufts-latex} package, only provides justified lines.
 %\item Some features of \textsf{tufte-latex} that does not make any sense in RTL, do not exist in \textsf{biditufte} bundle (no need for \textsf{soul}, \textsf{letterspace} and \textsf{macrotype} packages).
 %\item If you want to configure \textsf{biditufte-book} class for your own needs, then you can create a file with the name \texttt{biditufte-book.cfg} and put your \LaTeX{} macros in that file; similarly, if you want to configure \textsf{biditufte-handout} class for your own needs, then you can create a file with the name \texttt{biditufte-handout.cfg} and put your \LaTeX{} macros in that file.
@@ -1138,7 +1137,7 @@ by Vafa Khalighi.
 %\iffalse
 %<*table>
 %\fi
-%% \CheckSum{47593}
+%% \CheckSum{47651}
 %% \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
@@ -2981,8 +2980,8 @@ by Vafa Khalighi.
 % \subsection{\textsf{bidi.sty}}
 %    \begin{macrocode}
 \NeedsTeXFormat{LaTeX2e}
-\def\bididate{2016/11/30}
-\def\bidiversion{v20.6}
+\def\bididate{2017/01/16}
+\def\bidiversion{v20.7}
 \ProvidesPackage{bidi}[\bididate\space \bidiversion\space
 Bidirectional typesetting in plain TeX and LaTeX]
 \edef\@bidi@info{****************************************************^^J%
@@ -2995,7 +2994,7 @@ Bidirectional typesetting in plain TeX and LaTeX]
 * and LaTeX.  The package includes adaptations^^J%
 * for use with many other commonly-used packages.^^J%
 * ^^J%
-* Copyright (c) 2009--2016 Vafa Khalighi^^J%
+* Copyright (c) 2009--2017 Vafa Khalighi^^J%
 * ^^J%
 * \bididate, \bidiversion^^J%
 * ^^J%
@@ -3011,6 +3010,25 @@ Bidirectional typesetting in plain TeX and LaTeX]
 \typeout{\@bidi@info}
 \edef\bidi@everyjob{\the\everyjob}
 \everyjob{\bidi@everyjob\typeout{\@bidi@info}}
+\edef\@bidi@strip@v@bidiversion{\expandafter\@gobble\bidiversion}
+\newcommand*{\IfbidiPackageVersionLater}[1]{%
+  \ifdim\@bidi@strip@v@bidiversion pt > #1 pt %
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi}
+\newcommand*{\IfbidiPackageVersionBefore}[1]{%
+  \ifdim\@bidi@strip@v@bidiversion pt < #1 pt %
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi}
+\newcommand*{\IfbidiPackageVersion}[1]{%
+  \ifdim\@bidi@strip@v@bidiversion pt = #1 pt %
+    \expandafter\@firstoftwo
+  \else
+    \expandafter\@secondoftwo
+  \fi}
 \RequirePackage{iftex}
 \RequireXeTeX
 \RequirePackage{biditools}
@@ -3977,14 +3995,30 @@ ill-advised in the old versions of bidi package.%
     {\@ifundefined{#1\@tempa}%
       {\PackageError{biditools}{Boolean #1 undefined}\@ehc}%
       {\csname#1\@tempa\endcsname}}}
+\newcommand*{\GlobalSetBoolean}[2]{%
+  \lowercase{\def\@tempa{#2}}%
+  \@ifundefined{@tempswa\@tempa}%
+    {\PackageError{biditools}%
+       {You can only set a boolean to `true' or `false'}\@ehc}%
+    {\@ifundefined{#1\@tempa}%
+      {\PackageError{biditools}{Boolean #1 undefined}\@ehc}%
+      {\global\csname#1\@tempa\endcsname}}}
 \newcommand*{\SetatBoolean}[2]{%
   \lowercase{\def\@tempa{#2}}%
   \@ifundefined{@tempswa\@tempa}%
     {\PackageError{biditools}%
        {You can only set a boolean to `true' or `false'}\@ehc}%
     {\@ifundefined{@#1\@tempa}%
-      {\PackageError{ifthen}{Boolean @#1 undefined}\@ehc}%
+      {\PackageError{biditools}{Boolean @#1 undefined}\@ehc}%
       {\csname @#1\@tempa\endcsname}}}
+\newcommand*{\GlobalSetatBoolean}[2]{%
+  \lowercase{\def\@tempa{#2}}%
+  \@ifundefined{@tempswa\@tempa}%
+    {\PackageError{biditools}%
+       {You can only set a boolean to `true' or `false'}\@ehc}%
+    {\@ifundefined{@#1\@tempa}%
+      {\PackageError{biditools}{Boolean @#1 undefined}\@ehc}%
+      {\global\csname @#1\@tempa\endcsname}}}
 \def\@bidi@removefromreset#1#2{{%
   \expandafter\let\csname c@#1\endcsname\@bidi@removefromreset
   \def\@elt##1{%
@@ -4042,6 +4076,7 @@ ill-advised in the old versions of bidi package.%
   \else
     \expandafter\@secondoftwo
   \fi}
+  
 \newcommand*{\if@bidi@csdef}[1]{%
   \ifcsname#1\endcsname
     \expandafter\@firstoftwo
@@ -5091,10 +5126,6 @@ bidi implementation of tufte float]
 \newcommand{\bidituftefloatError}[2]{\PackageError{\@bidituftefloat@pkgname}{#1}{#2}}
 \newcommand{\bidituftefloatDebugInfoNL}[1]{\ifthenelse{\boolean{@bidituftefloat@debug}}{\bidituftefloatInfoNL{#1}}{}}
 \newcommand{\bidituftefloatInfoNL}[1]{\PackageInfo{\@bidituftefloat@pkgname}{#1\@gobble}}
-\newboolean{@bidituftefloat@RTLgeometry}
-\setboolean{@bidituftefloat@RTLgeometry}{true}
-\DeclareOption{RTLgeometry}{\setboolean{@bidituftefloat@RTLgeometry}{true}}
-\DeclareOption{LTRgeometry}{\setboolean{@bidituftefloat@RTLgeometry}{false}}
 \newboolean{@bidituftefloat@afourpaper}
 \DeclareOption{a4paper}{\setboolean{@bidituftefloat@afourpaper}{true}}
 \newboolean{@bidituftefloat@bfivepaper}
@@ -5120,16 +5151,7 @@ bidi implementation of tufte float]
   \setlength{#1}{#2}%
   \global#1=#1\relax%
 }
-%% Globally sets a boolean
-\newcommand*{\gsetboolean}[2]{% based on code from ifthen pkg
-  \lowercase{\def\@tempa{#2}}%
-  \@ifundefined{@tempswa\@tempa}%
-    {\PackageError{ifthen}{You can only set a boolean to `true' or `false'}\@ehc}%
-    {\@ifundefined{#1\@tempa}%
-      {\PackageError{ifthen}{Boolean #1 undefined}\@ehc}%
-      {\global\csname#1\@tempa\endcsname}%
-    }%
-}
+
 %% Set the font sizes and baselines to match bidituftefloat's books
 \renewcommand\normalsize{%
    \@setfontsize\normalsize\@xpt{14}%
@@ -5159,21 +5181,13 @@ bidi implementation of tufte float]
   \setlength{\parskip}{0pt}%
 }
 \RequirePackage{ragged2e}
-\ifthenelse{\boolean{@bidituftefloat@RTLgeometry}}{%
-\RequirePackage[letterpaper,right=1in,top=1in,headsep=2\baselineskip,textwidth=26pc,marginparsep=2pc,marginparwidth=12pc,textheight=44\baselineskip,headheight=\baselineskip]{geometry}
-\ifthenelse{\boolean{@bidituftefloat@afourpaper}}
-  {\geometry{a4paper,right=24.8mm,top=27.4mm,headsep=2\baselineskip,textwidth=107mm,marginparsep=8.2mm,marginparwidth=49.4mm,textheight=49\baselineskip,headheight=\baselineskip}}
-  {}
-\ifthenelse{\boolean{@bidituftefloat@bfivepaper}}
-  {\geometry{paperwidth=176mm,paperheight=250mm,right=14.66mm,top=13.88mm,textwidth=102.66mm,marginparsep=7.33mm,marginparwidth=36.66mm,textheight=38\baselineskip,includehead}}
-  {}}{%
 \RequirePackage[letterpaper,left=1in,top=1in,headsep=2\baselineskip,textwidth=26pc,marginparsep=2pc,marginparwidth=12pc,textheight=44\baselineskip,headheight=\baselineskip]{geometry}
 \ifthenelse{\boolean{@bidituftefloat@afourpaper}}
   {\geometry{a4paper,left=24.8mm,top=27.4mm,headsep=2\baselineskip,textwidth=107mm,marginparsep=8.2mm,marginparwidth=49.4mm,textheight=49\baselineskip,headheight=\baselineskip}}
   {}
 \ifthenelse{\boolean{@bidituftefloat@bfivepaper}}
   {\geometry{paperwidth=176mm,paperheight=250mm,left=14.66mm,top=13.88mm,textwidth=102.66mm,marginparsep=7.33mm,marginparwidth=36.66mm,textheight=38\baselineskip,includehead}}
-  {}}
+  {}
 \ifthenelse{\boolean{@bidituftefloat@symmetric}}
   {}
   {\geometry{asymmetric}}% forces internal LaTeX `twoside'
@@ -5263,8 +5277,8 @@ bidi implementation of tufte float]
 \newcommand{\floatalignment}{x}% holds the current float alignment (t, b, h, p)
 \newcommand{\setfloatalignment}[1]{\global\def\floatalignment{#1}\@bidituftefloat@float@debug{Forcing position: [#1]}}% manually sets the float alignment
 \newboolean{@bidituftefloat@float@recto}
-\newcommand{\forcerectofloat}{\gsetboolean{@bidituftefloat@float@recto}{true}\@bidituftefloat@float@debug{Forcing page: [recto]}}
-\newcommand{\forceversofloat}{\gsetboolean{@bidituftefloat@float@recto}{false}\@bidituftefloat@float@debug{Forcing page: [verso]}}
+\newcommand{\forcerectofloat}{\GlobalSetBoolean{@bidituftefloat@float@recto}{true}\@bidituftefloat@float@debug{Forcing page: [recto]}}
+\newcommand{\forceversofloat}{\GlobalSetBoolean{@bidituftefloat@float@recto}{false}\@bidituftefloat@float@debug{Forcing page: [verso]}}
 \newsavebox{\@bidituftefloat@figure@box}
 \newsavebox{\@bidituftefloat@caption@box}
 \let\@bidituftefloat@orig@float\@float
@@ -5291,13 +5305,13 @@ bidi implementation of tufte float]
   {% begin @bidituftefloat@float
     % Should this float be full-width or just text-width?
     \ifthenelse{\equal{#3}{star}}%
-      {\gsetboolean{@bidituftefloat@float@star}{true}}%
-      {\gsetboolean{@bidituftefloat@float@star}{false}}%
+      {\GlobalSetBoolean{@bidituftefloat@float@star}{true}}%
+      {\GlobalSetBoolean{@bidituftefloat@float@star}{false}}%
     % Check page side (recto/verso) and store detected value -- can be overriden in environment contents
     \@bidituftefloat@checkoddpage%
     \ifthenelse{\boolean{@bidituftefloat@odd@page}}%
-      {\gsetboolean{@bidituftefloat@float@recto}{true}\@bidituftefloat@float@debug{Detected page: [recto/odd]}}%
-      {\gsetboolean{@bidituftefloat@float@recto}{false}\@bidituftefloat@float@debug{Detected page: [verso/even]}}%
+      {\GlobalSetBoolean{@bidituftefloat@float@recto}{true}\@bidituftefloat@float@debug{Detected page: [recto/odd]}}%
+      {\GlobalSetBoolean{@bidituftefloat@float@recto}{false}\@bidituftefloat@float@debug{Detected page: [verso/even]}}%
     % If the float placement specifier is 'b' and only 'b', then bottom-align the mini-pages, otherwise top-align them.
     \renewcommand{\@bidituftefloat@fps}{#1}%
     \@bidituftefloat@float@debug{Allowed positions: [#1]}%
@@ -5584,8 +5598,8 @@ bidi implementation of tufte float]
 \setboolean{@bidituftefloat@packages@subfigure}{false}
 \AtBeginDocument{%
   \@ifpackageloaded{subfigure}
-    {\gsetboolean{@bidituftefloat@packages@subfigure}{true}}
-    {\gsetboolean{@bidituftefloat@packages@subfigure}{false}}%
+    {\GlobalSetBoolean{@bidituftefloat@packages@subfigure}{true}}
+    {\GlobalSetBoolean{@bidituftefloat@packages@subfigure}{false}}%
 }
 \AtBeginDocument{%
   \@ifpackageloaded{float}{%
@@ -5826,19 +5840,7 @@ bidi implementation of tufte sidenote]
   \global#1=#1\relax%
 }%
 }{}
-%%
-% Globally sets a boolean
-\@ifundefined{gsetboolean}{%
-\newcommand*{\gsetboolean}[2]{% based on code from ifthen pkg
-  \lowercase{\def\@tempa{#2}}%
-  \@ifundefined{@tempswa\@tempa}%
-    {\PackageError{ifthen}{You can only set a boolean to `true' or `false'}\@ehc}%
-    {\@ifundefined{#1\@tempa}%
-      {\PackageError{ifthen}{Boolean #1 undefined}\@ehc}%
-      {\global\csname#1\@tempa\endcsname}%
-    }%
-}%
-}{}
+
 %%
 % A function that removes leading and trailling spaces from the supplied macro.
 % Based on code written by Michael Downes (See ``Around the Bend'', #15.)
@@ -12755,7 +12757,7 @@ bidi implementation of tufte title]
 %\fi
 % \subsection{\textsf{geometry-xetex-bidi.def}}
 %    \begin{macrocode}
-\ProvidesFile{geometry-xetex-bidi.def}[2013/04/01 v0.1 bidi adaptations for geometry package for XeTeX engine]
+\ProvidesFile{geometry-xetex-bidi.def}[2017/01/14 v0.2 bidi adaptations for geometry package for XeTeX engine]
 \renewcommand*{\Gm@vrules@mpi}{%
 \if@RTLmain%
         \hb@xt@\@tempdima{\hskip-\marginparwidth\hskip-\marginparsep
@@ -12776,7 +12778,27 @@ bidi implementation of tufte title]
   \llap{\Gm@vrule}\ignorespaces
   \hskip \marginparwidth\rlap{\Gm@vrule}\hskip \marginparsep
   \llap{\Gm@vrule}\hskip\textwidth\rlap{\Gm@vrule}\hss}\fi}%
-
+\bidi@patchcmd{\Gm@pageframes}{%
+     \ifodd\count\z@
+       \let\@themargin\oddsidemargin
+     \else
+       \let\@themargin\evensidemargin
+     \fi
+}{%
+     \ifodd\count\z@
+       \if@RTLmain
+         \let\@themargin\evensidemargin
+       \else
+         \let\@themargin\oddsidemargin
+       \fi
+     \else
+       \if@RTLmain
+         \let\@themargin\oddsidemargin
+       \else
+         \let\@themargin\evensidemargin
+       \fi
+     \fi
+}{}{}
 %    \end{macrocode}
 % \iffalse
 %</geometry-xetex-bidi.def>
@@ -13835,7 +13857,7 @@ bidi implementation of tufte title]
 %\fi
 % \subsection{\textsf{listings-xetex-bidi.def}}
 %    \begin{macrocode}
-\ProvidesFile{listings-xetex-bidi.def}[2016/11/08 v1.3 bidi adaptations for listings package for XeTeX engine]
+\ProvidesFile{listings-xetex-bidi.def}[2017/01/14 v1.4 bidi adaptations for listings package for XeTeX engine]
 \lst@Key{captiondirection}{textdirection}{%
     \lstKV@SwitchCases{#1}%
     {textdirection&\\%
@@ -13843,9 +13865,9 @@ bidi implementation of tufte title]
      LTR&\chardef\bidi@lst@caption@direction\z@%
     }{\PackageError{Listings}{direction #1 unknown}\@ehc}}
     
-\lst@Key{captionscript}{latin}{%
+\lst@Key{captionscript}{textscript}{%
     \lstKV@SwitchCases{#1}%
-    {%
+    {textscript&\\%
      latin&\chardef\bidi@lst@caption@script\@ne\\%
      nonlatin&\chardef\bidi@lst@caption@script\z@%
     }{\PackageError{Listings}{direction #1 unknown}\@ehc}}
@@ -13860,14 +13882,20 @@ bidi implementation of tufte title]
          \fi%
      \fi%
 }}
-\long\def\@bidi@lst@makecaption#1#2{%
+
+\newcommand*{\bidi@lst@ensure@caption@script}[2]{%
+   \@ifundefined{bidi@lst@caption@script}{}{%
     \ifnum\bidi@lst@caption@script=\z@%
-        \@nonlatintrue%
+        #1%
     \else%
          \ifnum\bidi@lst@caption@script=\@ne%
-             \@nonlatinfalse%
+             #2%
          \fi%
      \fi%
+}}
+
+\long\def\@bidi@lst@makecaption#1#2{%
+   \bidi@lst@ensure@caption@script{\@nonlatintrue}{\@nonlatinfalse}%
    \vskip\abovecaptionskip
    \bidi@lst@ensure@caption@direction{\@RTLfalse}{\@RTLtrue}%
    \sbox\@tempboxa{%
@@ -13911,13 +13939,7 @@ bidi implementation of tufte title]
 }
 \@ifpackageloaded{caption}{%
   \AtBeginCaption{%
-      \ifnum\bidi@lst@caption@script=\z@%
-        \@nonlatintrue%
-    \else%
-         \ifnum\bidi@lst@caption@script=\@ne%
-             \@nonlatinfalse%
-         \fi%
-     \fi%
+  \bidi@lst@ensure@caption@script{\@nonlatintrue}{\@nonlatinfalse}%
   \bidi@lst@ensure@caption@direction{\@RTLfalse}{\@RTLtrue}%
 }
   \let\@bidi@lst@makecaption\caption@makecaption%
@@ -21975,9 +21997,17 @@ $\@@underline{\hbox{#1}}\m@th$\relax\fi\fi}
   \fi
   \if@twoside
     \ifodd\count\z@ \let\@thehead\@oddhead \let\@thefoot\@oddfoot
+       \if@RTLmain
+          \let\@themargin\evensidemargin
+        \else
+          \let\@themargin\oddsidemargin
+        \fi
+    \else \let\@thehead\@evenhead \let\@thefoot\@evenfoot 
+       \if@RTLmain
          \let\@themargin\oddsidemargin
-    \else \let\@thehead\@evenhead
-       \let\@thefoot\@evenfoot \let\@themargin\evensidemargin
+       \else
+         \let\@themargin\evensidemargin
+       \fi
     \fi
     \ifx\@thehead\@empty \let\@thehead\hfil \fi
     \ifx\@thefoot\@empty \let\@thefoot\hfil \fi
diff --git a/Master/texmf-dist/source/xelatex/bidi/bidi.ins b/Master/texmf-dist/source/xelatex/bidi/bidi.ins
index 7deb4c87c0e..dcbd629e727 100644
--- a/Master/texmf-dist/source/xelatex/bidi/bidi.ins
+++ b/Master/texmf-dist/source/xelatex/bidi/bidi.ins
@@ -7,7 +7,7 @@
 %% bidi.dtx  (with options: `batchfile')
 %% 
 %%   __________________________________________________
-%%   Copyright (c) 2009--2016  Vafa Khalighi <persian-tex@tug.org>
+%%   Copyright (c) 2009--2017  Vafa Khalighi <persian-tex@tug.org>
 %% 
 %%   It may be distributed and/or modified under the LaTeX Project Public License,
 %%   version 1.3c or higher (your choice). The latest version of
@@ -22,7 +22,7 @@
 \preamble
 
   __________________________________________________
-  Copyright (c) 2009--2016  Vafa Khalighi <persian-tex@tug.org>
+  Copyright (c) 2009--2017  Vafa Khalighi <persian-tex@tug.org>
 
   It may be distributed and/or modified under the LaTeX Project Public License,
   version 1.3c or higher (your choice). The latest version of