CTAN sync 202306030301

1 files changed, 0 insertions, 4461 deletions

diff --git a/macros/latex/contrib/revtex/source/ltxutil.dtx b/macros/latex/contrib/revtex/source/ltxutil.dtx
deleted file mode 100644
index 4689c417a1..0000000000
--- a/macros/latex/contrib/revtex/source/ltxutil.dtx
+++ /dev/null
@@ -1,4461 +0,0 @@
-% \iffalse meta-comment balanced on line 107
-% ltxutil.dtx: utilities package
-% Copyright (c) 2009 Arthur Ogawa
-%
-% Disclaimer
-%   This file is distributed WITHOUT ANY WARRANTY;
-%   without even the implied warranty of
-%   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-% License
-%   You may distribute this file under the conditions of the 
-%   LaTeX Project Public License 1.3c or later 
-%   (http://www.latex-project.org/lppl.txt).
-% ReadMe
-%   For the documentation and more detailed instructions for
-%   installation, typeset this document with \LaTeX.
-% Maintenance Status
-%   This work has the LPPL maintenance status "maintained";
-%   Current Maintainer of this work is Arthur Ogawa
-%   changes for version 4.2d--4.2f by Phelype Oleinik.
-%
-% This work consists of the main source file ltxutil.dtx
-% and the derived files
-%    ltxutil.sty, ltxutil.pdf
-% Distribution:
-%    CTAN:macros/latex/contrib/revtex/
-%
-% Unpacking:
-%    tex ltxutil.dtx
-%
-% Documentation:
-%    latex ltxutil.dtx; ...
-%
-%    Program calls to get the documentation (example):
-%       pdflatex ltxutil.dtx
-%       makeindex -s gind.ist ltxutil.idx
-%       makeindex -s gglo.ist -o ltxutil.gls ltxutil.glo
-%       pdflatex ltxutil.dtx
-%       makeindex -s gind.ist ltxutil.idx
-%       pdflatex ltxutil.dtx
-%
-% Installation:
-%    TDS:doc/latex/revtex/
-%    TDS:source/latex/revtex/
-%    TDS:tex/latex/revtex/
-%
-% Thanks, Heiko!
-%    This method of letting a single .dtx file serve as both
-%    documentation (via latex) and installer (via tex) follows
-%    the example of Heiko Oberdiek. Thanks!
-%<*ignore>
-\begingroup
-  \def\x{LaTeX2e}%
-\expandafter\endgroup
-\ifcase
- 0\expandafter\ifx\csname processbatchFile\endcsname\relax\else1\fi\ifx\fmtname\x\else 1\fi
- \relax
-\else
- \csname fi\endcsname
-%</ignore>
-%<*install>
-\input docstrip
-\preamble
-
-This is a generated file;
-altering it directly is inadvisable;
-instead, modify the original source file.
-See the URL in the file README-LTXUTIL.tex.
-
-License
-   You may distribute this file under the conditions of the 
-   LaTeX Project Public License 1.3c or later 
-   (http://www.latex-project.org/lppl.txt).
-   
-   This file is distributed WITHOUT ANY WARRANTY; 
-   without even the implied warranty of MERCHANTABILITY 
-   or FITNESS FOR A PARTICULAR PURPOSE.
-
-\endpreamble
-\askforoverwritefalse
-\keepsilent
- \generate{%
-  %{ignore}
-  \file{ltxutil.sty}{%
-   \from{ltxutil.dtx}{package,kernel}%
-  }%
-  \file{ltxutil.krn}{%
-   \from{ltxutil.dtx}{kernel}%
-  }%
- }%
-\ifToplevel{
-\Msg{***********************************************************}
-\Msg{*}
-\Msg{* To finish the installation, please move}
-\Msg{*    ltxutil.sty}
-\Msg{* into a directory searched by TeX;}
-\Msg{* in a TDS-compliant installation:}
-\Msg{* texmf/tex/macros/latex/revtex/.}
-\Msg{*}
-\Msg{* To produce the documentation,
-       run ltxutil.dtx through LaTeX.}
-\Msg{*}
-\Msg{* Happy TeXing}
-\Msg{***********************************************************}
-}
-\endbatchfile
-%</install>
-%<*ignore>
-\fi
-%</ignore>
-% \fi
-%
-% \GetFileInfo{ltxutil.dtx}
-%
-% \iffalse ltxdoc klootch
-%<*package>
-%%%  @LaTeX-file{
-%%%     filename        = "ltxutil.dtx",
-%%%     version         = "4.2f",
-%%%     date            = "2022/06/05",
-%%%     author          = "Arthur Ogawa (mailto:arthur_ogawa at sbcglobal.net),
-%%%                        Phelype Oleinik (mailto:phelype.oleinik at latex-project.org),
-%%%                        commissioned by the American Physical Society. Minor changes by Mark Doyle for version 4.2a-c.
-%%%                        ",
-%%%     copyright       = "Copyright (C) 1999, 2009 Arthur Ogawa,
-%%%                        distributed under the terms of the 
-%%%                        LaTeX Project Public License 1.3c, see
-%%%                        ftp://ctan.tug.org/macros/latex/base/lppl.txt
-%%%                        ",
-%%%     address         = "Arthur Ogawa,
-%%%                        USA",
-%%%     telephone       = "",
-%%%     FAX             = "",
-%%%     email           = "mailto colon arthur_ogawa at sbcglobal.net",
-%%%     codetable       = "ISO/ASCII",
-%%%     keywords        = "latex, page grid, main vertical list",
-%%%     supported       = "yes",
-%%%     abstract        = "utilities package",
-%%%  }
-%</package>
-% \fi
-%
-% \iffalse ltxdoc klootch
-% The following references the \file{README-LTXUTIL} file,
-% which contains basic information about this package.
-% The contents of this file are generated when
-% you typeset the programmer's documentation.
-% Search on "{filecontents*}{README-LTXUTIL}" to locate it.
-% \fi\input{README-LTXUTIL}%
-%
-% \subsection{Bill of Materials}
-%
-% Following is a list of the files in this distribution arranged
-% according to provenance.
-%
-% \subsubsection{Primary Source}%
-% One single file generates all.
-%\begin{verbatim}
-%ltxutil.dtx
-%\end{verbatim}
-%
-% \subsubsection{Generated by \texttt{latex ltxutil.dtx}}%
-% Typesetting the source file under pdflatex
-% generates the readme and the documentation.
-%\begin{verbatim}
-%README-LTXUTIL ltxutil.pdf
-%\end{verbatim}
-%
-% \subsubsection{Generated by \texttt{tex ltxutil.dtx}}%
-% Typesetting this file with \TeX\ generates
-% the package file.
-%\begin{verbatim}
-%ltxutil.sty
-%\end{verbatim}
-%
-% \subsubsection{Auxiliary}%
-% The following are auxiliary files generated
-% in the course of running \LaTeX:
-% \begin{verbatim}
-%ltxutil.aux ltxutil.idx ltxutil.ind ltxutil.log ltxutil.toc
-% \end{verbatim}
-%
-% \section{Code common to all modules}%
-%
-% We want to require only one place in this file
-% where the version number is stated,
-% and we also want to ensure that the version
-% number is embedded into every generated file.
-%
-% Now we declare that
-% these files can only be used with \LaTeXe.
-% An appropriate message is displayed if
-% a different \TeX{} format is used.
-%    \begin{macrocode}
-%<*doc|package>
-\NeedsTeXFormat{LaTeX2e}[1995/12/01]%
-%</doc|package>
-%    \end{macrocode}
-% As desired, the following modules all
-% take common version information:
-%    \begin{macrocode}
-%<kernel&!package&!doc>\typeout{%
-%<*package|doc>
-\ProvidesFile{%
-%</package|doc>
-%<*kernel|package|doc>
-ltxutil%
-%</kernel|package|doc>
-%<*doc>
-.dtx%
-%</doc>
-%<package>.sty%
-%<*package|doc>
-}%
-%</package|doc>
-%    \end{macrocode}
-%
-% The following line contains, for once and for all,
-% the version and date information.
-% By various means, this information is reproduced
-% consistently in all generated files and in the
-% typeset documentation.
-% Give credit where due. 
-%    \begin{macrocode}
-%<*doc|package|kernel>
-%<version>
- [2022/06/05 4.2f utilities package (portions licensed from W. E. Baxter web at superscript.com)]% \fileversion
-%</doc|package|kernel>
-%<kernel&!package&!doc>}%
-%    \end{macrocode}
-%
-%
-% \section{The driver module \texttt{doc}}
-%
-% This module, consisting of the present section,
-% typesets the programmer's documentation,
-% generating the \file{README-LTXUTIL} as required.
-%
-% Because the only uncommented-out lines of code at the beginning of
-% this file constitute the \file{doc} module itself,
-% we can simply typeset the \file{.dtx} file directly,
-% and there is thus rarely any need to
-% generate the ``doc'' {\sc docstrip} module.
-% Module delimiters are nonetheless required so that
-% this code does not find its way into the other modules.
-%
-% The \enve{document} command concludes the typesetting run.
-%
-%    \begin{macrocode}
-%<*doc>
-%    \end{macrocode}
-%
-% \subsection{The Preamble}
-% The programmers documentation is formatted
-% with the \classname{ltxdoc} class with local customizations,
-% and with the usual code line indexing.
-%    \begin{macrocode}
-\documentclass{ltxdoc}
-\RequirePackage{ltxdocext}%
-\let\url\undefined
-\RequirePackage[colorlinks=true,linkcolor=blue]{hyperref}%
-\pdfstringdefDisableCommands{%
-  \let\file\relax
-  \let\sc\relax
-}
-%\expandafter\ifx\csname package@font\endcsname\@undefined\else
-% \expandafter\RequirePackage\expandafter{\csname package@font\endcsname}%
-%\fi
-\CodelineIndex\EnableCrossrefs % makeindex -s gind.ist ltxutil
-\RecordChanges % makeindex -s gglo.ist -o ltxutil.gls ltxutil.glo
-%    \end{macrocode}
-%
-% \subsubsection{Docstrip and info directives}
-%    We use so many {\sc docstrip} modules that we set the
-%    \texttt{StandardModuleDepth} counter to 1.
-%    \begin{macrocode}
-\setcounter{StandardModuleDepth}{1}
-%    \end{macrocode}
-%    The following command retrieves the date and version information
-%    from this file.
-%    \begin{macrocode}
-\expandafter\GetFileInfo\expandafter{\jobname.dtx}%
-%    \end{macrocode}
-%
-% \subsection{The ``Read Me'' File}
-% As promised above, here is the contents of the
-% ``Read Me'' file. That file serves a double purpose,
-% since it also constitutes the beginining of the
-% programmer's documentation. What better thing, after
-% all, to have appear at the beginning of the
-% typeset documentation?
-%
-% A good discussion of how to write a ReadMe file can be found in
-% Engst, Tonya, ``Writing a ReadMe File? Read This''
-% \emph{MacTech} October 1998, p. 58.
-%
-% Note the appearance of the
-% \cmd\StopEventually\ command, which marks the
-% dividing line between the user documentation
-% and the programmer documentation.
-%
-% The usual user will not be asked to
-% do a full build, not to speak
-% of the bootstrap.
-% Instructions for carrying out these procedures
-% begin the programmer's manual.
-%
-%    \begin{macrocode}
-\begin{filecontents*}{README-LTXUTIL}
-\title{%
- A \LaTeX\ Package of utility macros%
- \thanks{%
-  This file has version number \fileversion,
-  last revised \filedate.%
- }%
- \thanks{%
-  Version \fileversion\ \copyright\ 2019--2022 American Physical Society
- }%
-}%
-\author{%
- Arthur Ogawa%
- \thanks{\texttt{mailto:arthur\_ogawa at sbcglobal.net}}%
-}%
-%\iffalse
-% For version number and date,
-% search on "\fileversion" in the .dtx file,
-% or see the end of the README-LTXUTIL file.
-%\fi
-\maketitle
-
-This file embodies the \classname{ltxutil} package,
-the implementation and its user documentation.
-
-The distribution point for this work is
-\url{journals.aps.org/revtex},
-which contains prebuilt runtime files, documentation, and full source, 
-ready to add to a TDS-compliant \TeX\ installation.
-
-The \classname{ltxutil} package was commissioned by the American Physical Society
-and is distributed under the terms of the \LaTeX\ Project Public License 1.3c,
-the same license under which all the portions of \LaTeX\ itself are distributed.
-Please see \url{http://ctan.tug.org/macros/latex/base/lppl.txt} for details.
-
-To use this document class, you must have a working
-\TeX\ installation equipped with \LaTeXe\ 
-and possibly pdftex and Adobe Acrobat Reader or equivalent.
-
-To install, retrieve the distribution,
-unpack it into a directory on the target computer,
-and move the file \file{ltxutil.sty}
-into a location in your filesystem where it will be found by \LaTeX.
-
-To use, read the user documentation \file{ltxutil.pdf}.
-
-\tableofcontents
-
-\section{Processing Instructions}
-
-The package file \file{ltxutil.sty}
-is generated from this file, \file{ltxutil.dtx},
-using the {\sc docstrip} facility of \LaTeX
-via |tex ltxutil.dtx| (Note: do \emph{not} use \LaTeX\ for this task).
-The typeset documentation that you are now reading is generated from
-the same file by typesetting it with \LaTeX\ or pdftex
-via |latex ltxutil.dtx| or |pdflatex ltxutil.dtx|.
-
-\subsection{Build Instructions}
-
-You may bootstrap this suite of files solely from \file{ltxutil.dtx}.
-Prepare by installing \LaTeXe\ (and either tex or pdftex) on your computer,
-then carry out the following steps:
-\begin{enumerate}
-\item
-Within an otherwise empty directory,
-typeset \file{ltxutil.dtx} with \LaTeX\ or pdflatex;
-you will obtain the typeset documentation you are now reading,
-along with the file \file{README-LTXUTIL}.
-
-Note: you will have to run \LaTeX, then 
-\file{makeindex} \texttt{-s gind.ist ltxutil.idx}, then
-\file{makeindex} \texttt{-s gglo.ist -o ltxutil.gls ltxutil.glo}, then
-\LaTeX\ again in order to obtain a valid index and table of contents.
-\item
-Now typeset \file{ltxutil.dtx} with \TeX (not \LaTeX),
-thereby generating the package file \file{ltxutil.sty}.
-\item
-Install the following files into indicated locations within your 
-TDS-compliant \texttt{texmf} tree (you may need root access):
-\begin{itemize}
-\item
-\file{$TEXMF/}\file{tex/}\file{latex/}\file{revtex/}\classname{ltxutil.sty}
-\item
-\file{$TEXMF/}\file{source/}\file{latex/}\file{revtex/}\classname{ltxutil.dtx}
-\item
-\file{$TEXMF/}\file{doc/}\file{latex/}\file{revtex/}\classname{ltxutil.pdf}
-\end{itemize}
-where \file{$TEXMF/} stands for \file{texmf-local/}, or some other \texttt{texmf} tree
-in your installation.
-\item
-Run \texttt{mktexlsr} on \file{$TEXMF/} (you may need root access).
-\item
-Build and installation are now complete; 
-now put a \cmd\usepackage\texttt{\{ltxutil\}} in your document preamble!
-\end{enumerate}
-
-\subsection{Change Log}
-\changes{4.0b}{1999/06/20}{AO: Fixed spurious \texttt{CR} and (return) characters in output file. Also, if the document did not have the \cs{end}\texttt{figure} on a line of its own, the macro wouldn't work. Fixed.}
-\changes{4.0b}{1999/06/20}{AO: Removed superfluous \cs{def}s, changed to using \cs{floats@sw} as the flag. Also stopped using DPC's \cs{if@twocolumn} flag: using \cs{floats@sw} instead. Also added \cs{par}\cs{vskip}\cs{z@skip} after the \cs{minipagefootnotes} so that the float box would have zero depth like the kernel one. }
-\changes{4.0b}{1999/06/20}{only execute if there really were floats of the given type}
-\changes{4.0b}{1999/06/20}{Support the hack with \cs{prepdef}, and delay until \cs{AtBeginDocument} time, since \classname{hyperref} clobbers \cs{caption}.}
-\changes{4.0c}{1999/11/13}{(AO, 110) Install hooks for endfloats processing}
-\changes{4.0c}{1999/11/13}{(AO, 116) Hyperref compatibility}
-\changes{4.0c}{1999/11/13}{(AO, 130) Interference from array package}
-\changes{4.0c}{1999/11/13}{*-form mandates pagebreak at each float; only print section head if there is something there.}
-\changes{4.0d}{2000/04/10}{(AO, 127) Floats placed [h] to allow page breaks}
-\changes{4.0d}{2000/04/10}{(AO, 174) kernel fix}
-\changes{4.0d}{2000/05/19}{(AO, 224) Hyperref compatibility.}
-\changes{4.0d}{2000/05/23}{Allow things to break over pages by setting array@default.}
-\changes{4.0e}{2000/11/16}{(AO, 221) Remove samepage command from @xfloat@prep: If the float can break over pages, we want better control.}
-\changes{4.0f}{2001/07/13}{(AO, 404) Hyperref compatibility}
-\changes{4.1a}{2008/01/19}{(AO, 459) do not assume \cs{class@name} is defined}%
-\changes{4.1a}{2008/01/19}{(AO, 461) Change the csname from \cs{@dotsep} to \cs{ltxu@dotsep}. The former is understood in mu. (What we wanted was a dimension.)}%
-\changes{4.1a}{2008/01/19}{(AO, 475) I had not properly reproduced the LaTeX macro \cs{eqnarray}.}%
-\changes{4.1a}{2008/01/19}{(AO, 479) Per: Dylan Thurston<dpt at math.harvard.edu>}%
-\changes{4.1a}{2008/06/30}{(AO) Make \cs{addtocontents} a \cs{long} \cs{def}; gobble up \cs{footnote}}%
-\changes{4.1a}{2008/06/30}{(AO) Remove code that avoided changes to \cs{@xfootnotemark}}%
-\changes{4.1a}{2008/06/30}{(AO, 438) Complete rewrite of footnote macros.}
-\changes{4.1a}{2008/07/07}{\cs{@xfloat@prep} calls \cs{ltx@footnote@pop} to restore the original \cs{ltx@footmark} and \cs{ltx@foottext} procedures, in case footnote processing has switched.}
-\changes{4.1a}{2008/08/12}{\cs{class@documenthook} is the last \cs{AtBeginDocument} token now}
-\changes{4.1a}{2008/08/12}{Class extension mechanism \cs{@pushfilename@ltx} and \cs{@p@pfilename@ltx}.}
-\changes{4.1a}{2008/08/12}{Class extension mechanism \cs{class@extension}, \cs{class@extensionfile}, and \cs{class@ext@hook}.}
-\changes{4.1a}{2008/08/12}{Get rid of \cs{set@typesize@hook} \cs{set@pica@hook} and the \cs{normalsize} directive}%
-\changes{4.1b}{2008/08/12}{(AO, 487) Support for video figures and the \cs{setfloatlink} command}%
-\changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-\changes{4.1b}{2008/08/12}{Acquire \classname{hyperref} savoire}
-\changes{4.1b}{2008/08/12}{Default assignment of \cs{float@sw} now, not at \cs{AtBeginDocument} time.}%
-\changes{4.1b}{2008/08/12}{If class option \classoption{lengthcheck} is in effect, log the height of this float class.}
-\changes{4.1b}{2008/08/12}{No need to protect against undefined \cs{float@sw}}
-\changes{4.1b}{2008/08/12}{Patch the array package even later: after all package patches go in.}
-\changes{4.1b}{2008/08/12}{Refine toc processing: provide default.}%
-\changes{4.1b}{2008/08/12}{Tally and log the height of a float class}
-\changes{4.1d}{2009/03/27}{(AO, 511) Compatability with lineno.sty's erroneous way of detecting fleqn.clo}%
-\changes{4.1f}{2009/07/07}{(AO, 515) Hook for setting the font of a footnote}
-\changes{4.1f}{2009/07/10}{(AO, 518) Tally register overflow when locument is long}
-\changes{4.1g}{2009/10/06}{(AO, 532) Both arguments of \cs{href} get sanitized}%
-\changes{4.1g}{2009/10/07}{(AO, 525) Remove phantom paragraph above display math that is given in vertical mode}%
-\changes{4.1g}{2009/10/07}{(AO, 539) Use of double-backslash in argument of \cs{section} gives error. The \classname{textcase} package is involved.}%
-\changes{4.1n}{2009/12/05}{(AO, 569) Use of \classname{hyperref} interferes with column balancing of last page}%
-\changes{4.1n}{2009/12/06}{(AO) Incorporate change to ltmiscen.dtx v1.1i 2000/05/19}%
-\changes{4.1n}{2009/12/09}{(AO, 569) execute \classname{atveryend}'s \cs{Call@AfterLastShipout} at the proper time}%
-\changes{4.1n}{2009/12/13}{(AO, 574) protect against \classname{lineno.sty}, which forces a visit to the output routine, which appears to destroy the value of \cs{@tempdima}}%
-\changes{4.1n}{2010/01/02}{(AO, 571) Interface \cs{set@footnotewidth} for determining the set width of footnotes}%
-\changes{4.1n}{2010/01/02}{(AO, 571) allow split after last line of footnote}%
-\changes{4.1n}{2010/01/06}{(AO, 572) title block footnotes numbered independently from body footnotes}%
-\changes{4.1p}{2010/02/24}{(AO, 582) A patch of \classname{hyperref.sty} to provide backward compatibility to \TeX Live 2007's version 6.75r}%
-\changes{4.2a}{2017/11/21}{(MD) Use updated best practice to use https and doi.org}%
-\changes{4.2a}{2018/12/12}{(MD) Updated name of README file and use standard fonts when typesetting}%
-\changes{4.2d}{2020/09/19}{(PHO) Adapt \cs{document} and \cs{enddocument} hooks to the 2020-10-01 \LaTeX{} release.}%
-
-\end{filecontents*}
-%    \end{macrocode}
-%
-% \subsection{The Document Body}
-%
-% Here is the document body, containing only a
-% \cmd\DocInput\ directive---referring to this very file.
-% This very cute self-reference is a common \classname{ltxdoc} idiom.
-%    \begin{macrocode}
-\begin{document}%
-\expandafter\DocInput\expandafter{\jobname.dtx}%
-\end{document}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-%</doc>
-%    \end{macrocode}
-%
-% \section{Using this package}
-% Once this package is installed on your filesystem, you can employ it in
-% adding functionality to \LaTeX\ by invoking it in your document or document class.
-%
-% \subsection{Invoking the package}
-% In your document, you can simply call it up in your preamble:
-% \begin{verbatim}
-%\documentclass{book}%
-%\usepackage{ltxutil}%
-%\begin{document}
-%<your document here>
-%\end{document}\end{verbatim}
-% However, the preferred way is to invoke this package from within your
-% customized document class:
-% \begin{verbatim}
-%\NeedsTeXFormat{LaTeX2e}[1995/12/01]%
-%\ProvidesClass{myclass}%
-%\RequirePackage{ltxutil}%
-%\LoadClass{book}%
-%<class customization commands>
-%\endinput\end{verbatim}
-%
-% Once loaded, the package gives you acccess to certain procedures,
-% usually to be invoked by a \LaTeX\ command or environment, but not at the document level.
-%
-%
-% \section{Compatibility with \LaTeX's Required Packages}
-% Certain packages, usually ones written by members of the 
-% \LaTeX\ Project itself, have been designated ``required'' and
-% are distributed as part of standard \LaTeX.
-% These packages have been placed in a priviledged position
-% vis \'a vis the \LaTeX\ kernel in that they override the definitions of certain kernel macros.
-%
-% The \classname{ltxutil} package will be incompatible with any package that
-% redefines any of the kernel macros that \classname{ltxutil} patches---if that
-% package is loaded \emph{after} \classname{ltxutil}. This means that for
-% greatest compatibility, \classname{ltxutil} should be loaded \emph{after},
-% say, \classname{ftnright}, which overwrites \LaTeX's kernel
-% procedures \cmd\@outputdblcol, \cmd\@startcolumn, and \cmd\@makecol.
-%
-% Hereinafter follows some notes on specific \LaTeX\ packages.
-%
-% \subsection{array}
-% This package alters the way tabular environments are done, 
-% therefore it could run afoul of the \LaTeX\ ``required'' package \classname{array} or any
-% package that calls for it to be loaded.
-% However, this package has provisions for remaining compatible with \classname{array}.
-% So long as the version of \classname{array} that is used with this package has the appropriate
-% meanings for the procedures it overwrites, all should be well.
-%
-% \subsection{longtable}
-% David Carlisle's \classname{longtable} package modifies both the \LaTeX\ kernel and the 
-% \classname{array} package. This package must therefore alter \cmd\LT@array. 
-% For now, that job is handled by \classname{ltxgrid}.
-% 
-%
-%\StopEventually{}
-%
-% \section{Implementation of package}
-%
-% Special acknowledgment: this package uses concepts pioneered
-% and first realized by William Baxter (mailto:web at superscript.com)
-% in his SuperScript line of commercial typesetting tools, and
-% which are used here with his permission. 
-%
-% \subsection{Beginning of the \file{package} {\sc docstrip} module}
-%    \begin{macrocode}
-%<*package>
-\def\package@name{ltxutil}%
-\expandafter\PackageInfo\expandafter{\package@name}{%
- Utility macros for \protect\LaTeXe,
- by A. Ogawa (arthur_ogawa at sbcglobal.net)%
-}%
-%</package>
-%    \end{macrocode}
-%
-% \subsection{Banner and beginning of the \file{kernel} {\sc docstrip} module}%
-%    \begin{macrocode}
-%<*kernel>
-%    \end{macrocode}
-%
-% \subsection{Errors and warnings}
-%
-% \begin{macro}{\class@err}
-% \begin{macro}{\class@warn}
-% \begin{macro}{\class@info}
-% A few shorthands for Class messages.
-% Your document class should define \cmd\class@name.
-%    \begin{macrocode}
-\def\class@err#1{\ClassError{\class@name}{#1}\@eha}%
-\def\class@warn#1{\ClassWarningNoLine{\class@name}{#1}}%
-\def\class@info#1{\ClassInfo{\class@name}{#1}}%
-\def\obsolete@command#1{%
- \class@warn@end{Command \string#1\space is obsolete.^^JPlease remove from your document}%
- \global\let#1\@empty
- #1%
-}%
-\def\replace@command#1#2{%
- \class@warn@end{Command \string#1\space is obsolete;^^JUse \string#2\space instead}%
- \global\let#1#2%
- #1%
-}%
-\def\replace@environment#1#2{%
- \class@warn@end{Environment #1 is obsolete;^^JUse #2 instead}%
- \glet@environment{#1}{#2}%
- \@nameuse{#1}%
-}%
-\def\incompatible@package#1{%
- \@ifpackageloaded{#1}{%
-  \def\@tempa{I cannot continue. You must remove the \string\usepackage\ statement that caused that package to be loaded.}%
-  \ClassError{\class@name}{The #1 package cannot be used with \class@name}%
-  \@tempa\stop
- }{%
-  \class@info{#1 was not loaded (OK!)}%
- }%
-}%
-\def\class@warn@end#1{%
- \gappdef\class@enddocumenthook{\class@warn{#1}}%
-}%
-%    \end{macrocode}
-%    \end{macro}
-%    \end{macro}
-%    \end{macro}
-%
-% \changes{4.1a}{2008/01/19}{(AO, 459) do not assume \cs{class@name} is defined}%
-% Give \cmd\class@name\ a meaning if it does not already have one. 
-%    \begin{macrocode}
-\ifx\undefined\class@name
- \def\class@name{ltxutil}%
- \class@warn{You should define the class name before reading in this package. Using default}%
-\fi
-%    \end{macrocode}
-%
-% \subsection{New Tools}%
-%
-% \begin{macro}{\t@}
-%    \begin{macrocode}
-\def\t@{to}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\dimen@iii}
-%    \begin{macrocode}
-\dimendef\dimen@iii\thr@@
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\halignt@}
-%    \begin{macrocode}
-\def\halignt@{\halign\t@}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\f@ur}
-% Analogous to \cmd\@ne, \cmd\tw@, and \cmd\thr@@.
-%    \begin{macrocode}
-\chardef\f@ur=4\relax
-\chardef\cat@letter=11\relax
-\chardef\other=12\relax
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\let@environment}
-% \begin{macro}{\glet@environment}
-% The directive \cmd\let@environment\ takes care of a common programming
-% idiom whereby one environment is made a synonym for another.
-%    \begin{macrocode}
-\def\let@environment#1#2{%
- \expandafter\let
- \csname#1\expandafter\endcsname\csname#2\endcsname
- \expandafter\let
- \csname end#1\expandafter\endcsname\csname end#2\endcsname
-}%
-\def\glet@environment#1#2{%
- \global\expandafter\let
- \csname#1\expandafter\endcsname\csname#2\endcsname
- \global\expandafter\let
- \csname end#1\expandafter\endcsname\csname end#2\endcsname
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\tracingplain}
-% The command \cmd\tracingplain\ causes \TeX's tracing parameters to
-% return to the values set by default. This command is sometimes
-% useful when you have said \cmd\tracingall\ somewhere and want to
-% restore.
-% The \cmd\traceoutput\ command causes \cmd\tracingoutput\ diagnostics
-% upon \cmd\shipout.
-%    \begin{macrocode}
-\newcommand\tracingplain{%
- \tracingonline\z@\tracingcommands\z@\tracingstats\z@
- \tracingpages\z@\tracingoutput\z@\tracinglostchars\@ne
- \tracingmacros\z@\tracingparagraphs\z@\tracingrestores\z@
- \showboxbreadth5\showboxdepth3\relax %\errorstopmode
- }%
-\newcommand\traceoutput{%
- \appdef\@resetactivechars{\showoutput}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\say}
-% \begin{macro}{\saythe}
-% The commands \cmd\say\ and \cmd\saythe\ cause diagnostic messages in the
-% \TeX\ log that give the value of a control sequence name or a register
-% respectively.
-%    \begin{macrocode}
-\newcommand\say[1]{\typeout{<\noexpand#1=\meaning#1>}}%
-\newcommand\saythe[1]{\typeout{<\noexpand#1=\the#1>}}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\fullinterlineskip}
-% Resets the \cmd\prevdepth\ so that the full amount of \cmd\baselineskip\ glue will be inserted by
-% the \cmd\baselinesklip\ mechanism. 
-% Can be invoked just after a \cmd\hrule\ to undo its default suppression of base line skip.
-%    \begin{macrocode}
-\def\fullinterlineskip{\prevdepth\z@}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\count@i}
-% \begin{macro}{\count@ii}
-% 
-%    \begin{macrocode}
-\countdef\count@i\@ne
-\countdef\count@ii\tw@
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-%
-% \subsection{Boolean Control}%
-% We introduce just enough of the Boolean calculus for \TeX.
-% Alan Jeffrey was the pioneer here, with an article in TUGboat
-% (Vol. 11, No. 2, page 237).
-% This implementation owes a debt to
-% William Baxter (web at superscript.com).
-% See articles by Baxter and Ogawa in the proceedings of the
-% 1994 TUG meeting, TUGboat Vol.~15, No.~3.
-%
-% \begin{macro}{\prepdef}
-% \begin{macro}{\appdef}
-% \begin{macro}{\gappdef}
-%
-% Provide the capability of performing head- and tail patches.
-% The procedure \cmd\prepdef\ prepends to the given macro
-% the tokens specified in its second argument.
-% Likewise for \cmd\appdef, except that it appends.
-% Note that the first 10 toks registers are utility registers,
-% and we simply make a control sequence name, \cmd\toks@ii, for one of
-% them.
-%    \begin{macrocode}
-\long\def\prepdef#1#2{%
- \@ifxundefined#1{\toks@{}}{\toks@\expandafter{#1}}%
- \toks@ii{#2}%
- \edef#1{\the\toks@ii\the\toks@}%
-}%
-\long\def\appdef#1#2{%
- \@ifxundefined#1{\toks@{}}{\toks@\expandafter{#1}}%
- \toks@ii{#2}%
- \edef#1{\the\toks@\the\toks@ii}%
-}%
-\long\def\gappdef#1#2{%
- \@ifxundefined#1{\toks@{}}{\toks@\expandafter{#1}}%
- \toks@ii{#2}%
- \global\edef#1{\the\toks@\the\toks@ii}%
-}%
-\long\def\appdef@val#1#2{%
- \appdef#1{{#2}}%
-}%
-\long\def\appdef@e#1#2{%
- \expandafter\appdef
- \expandafter#1%
- \expandafter{#2}%
-}%
-\long\def\appdef@eval#1#2{%
- \expandafter\appdef@val
- \expandafter#1%
- \expandafter{#2}%
-}%
-\toksdef\toks@ii=\tw@
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@ifxundefined}
-% \begin{macro}{\@ifnotrelax}
-% \begin{macro}{\@argswap}
-% \begin{macro}{\@argswap@val}
-%
-% Certain utility procedures use \cmd\@ifxundefined,
-% which is defined here in terms of \cmd\@ifx.
-% Others use \cmd\@ifnotrelax, namely when 
-% the control sequence name is manufactured by
-% the use of \cmd\csname.
-%
-% The procedures \cmd\@argswap and \cmd\@argswap@val
-% are used to facilitate control of expansion.
-%
-%    \begin{macrocode}
-\long\def\@ifxundefined#1{\@ifx{\undefined#1}}%
-\long\def\@ifnotrelax#1#2#3{\@ifx{\relax#1}{#3}{#2}}%
-\long\def\@argswap#1#2{#2#1}%
-\long\def\@argswap@val#1#2{#2{#1}}%
-\def\@ifxundefined@cs#1{\expandafter\@ifx\expandafter{\csname#1\endcsname\relax}}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\rvtx@ifformat@geq}
-%   Some changes in the \LaTeX{} kernel requires us to conditionally
-%   define some macros depending on the version of the kernel.
-%   \cmd\rvtx@ifformat@geq{} will check if the release date of the
-%   currently-running \LaTeXe{} kernel is greater or equal to the
-%   argument (the argument should be in the format \texttt{yyyy-mm-dd}).
-% \changes{4.2d}{2020/09/17}{(PHO) Add \cs{rvtx@ifformat@geq}.}%
-%    \begin{macrocode}
-\ifx\IfFormatAtLeastTF\undefined
-  \def\rvtx@ifformat@geq{\@ifl@t@r\fmtversion}%
-\else
-  \let\rvtx@ifformat@geq\IfFormatAtLeastTF
-\fi
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@boolean}
-% \begin{macro}{\@boole@def}
-% In order to define \cmd\@ifx, we first must create the
-% ``defining word'' (term taken form our Forth vocabulary)
-% \cmd\@boole@def, which employs \cmd\@boolean\ to do its job.
-%    \begin{macrocode}
-\def\@boolean#1#2{%
-  \long\def#1{%
-    #2% \if<something>
-      \expandafter\true@sw
-    \else
-      \expandafter\false@sw
-    \fi
-  }%
-}%
-\def\@boole@def#1#{\@boolean{#1}}% Implicit #2
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@booleantrue}
-% \begin{macro}{\@booleanfalse}
-% The procedures \cmd\@booleantrue\ and
-% \cmd\@booleanfalse\ are assignment operators
-% for Boolean flags.
-%    \begin{macrocode}
-\def\@booleantrue#1{\let#1\true@sw}%
-\def\@booleanfalse#1{\let#1\false@sw}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@ifx}
-% \begin{macro}{\@ifx@empty}
-% \begin{macro}{\@if@empty}
-% \begin{macro}{\@ifcat}%
-% \begin{macro}{\@ifdim}%
-% \begin{macro}{\@ifeof}%
-% \begin{macro}{\@ifhbox}%
-% \begin{macro}{\@ifhmode}%
-% \begin{macro}{\@ifinner}%
-% \begin{macro}{\@ifmmode}%
-% \begin{macro}{\@ifnum}%
-% \begin{macro}{\@ifodd}%
-% \begin{macro}{\@ifvbox}%
-% \begin{macro}{\@ifvmode}%
-% \begin{macro}{\@ifvoid}%
-% We can now invoke the defining word to create
-% the procedures \cmd\@ifx\ and friends.
-%
-% Compatibility Note: earlier versions of this package 
-% defined a procedure \cmd\@ifempty. However, for compatibility with AMS\LaTeX,
-% we must avoid the following three names:
-% \cmd\@ifempty, \cmd\@xifempty, and \cmd\@ifnotempty.
-%
-%    \begin{macrocode}
-\@boole@def\@ifx#1{\ifx#1}%
-\@boole@def\@ifx@empty#1{\ifx\@empty#1}%
-\@boole@def\@if@empty#1{\if!#1!}%
-%\@boole@def\@if@sw#1{\csname if#1\endcsname}%
-\def\@if@sw#1#2{#1\expandafter\true@sw\else\expandafter\false@sw#2}%
-\@boole@def\@ifdim#1{\ifdim#1}%
-\@boole@def\@ifeof#1{\ifeof#1}%
-\@boole@def\@ifhbox#1{\ifhbox#1}%
-\@boole@def\@ifhmode{\ifhmode}%
-\@boole@def\@ifinner{\ifinner}%
-\@boole@def\@ifmmode{\ifmmode}%
-\@boole@def\@ifnum#1{\ifnum#1}%
-\@boole@def\@ifodd#1{\ifodd#1}%
-\@boole@def\@ifvbox#1{\ifvbox#1}%
-\@boole@def\@ifvmode{\ifvmode}%
-\@boole@def\@ifvoid#1{\ifvoid#1}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\true@sw}
-% \begin{macro}{\false@sw}
-%
-% Note that when a Boolean operator expands, it
-% employs two macros that act as selectors, defined here.
-%
-%    \begin{macrocode}
-\long\def\true@sw#1#2{#1}%
-\long\def\false@sw#1#2{#2}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\loopuntil}
-% \begin{macro}{\loopwhile}
-%
-% Loop control using the Boolean idiom.
-% Superior to \cmd\loop\dots\cmd\repeat\ because these can be nested.
-% The tail of the argument must have a Boolean predicate.
-%
-%    \begin{macrocode}
-\long\def\loopuntil#1{#1{}{\loopuntil{#1}}}%
-\long\def\loopwhile#1{#1{\loopwhile{#1}}{}}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@provide}
-%
-% A defining word that refuses to clobber a prior meaning.
-%
-%    \begin{macrocode}
-\def\@provide#1{%
- \@ifx{\undefined#1}{\true@sw}{\@ifx{\relax#1}{\true@sw}{\false@sw}}%
- {\def#1}{\def\j@nk}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Begin Document Structure}
-% The standard \LaTeX\ mechanism \cmd\AtBeginDocument\
-% is inadequate because the \cmd\vsize\ is bound much too early.
-% We supply here a mechanism whereby decisions about the 
-% page layout can be deferred until \cmd\AtBeginDocument\ time.
-%
-% The problem we are working around is that the \cmd\AtBeginDocument\
-% hook in \cmd\document\ appears long after the calculation of
-% \cmd\vsize\ and \cmd\hsize, that is, \LaTeX\ provides no mechanism
-% for deferring the decision about the page grid until \cmd\AtBeginDocument\ time.
-% We fix things by prepending a hook at the very beginning of \cmd\document.
-%
-% As it turns out, though, it appears feasible to simply invoke the desired 
-% column grid command at \cmd\AtBeginDocument\ time, since the MVL has nothing in it
-% at that time that would be problematical.
-%
-% \begin{macro}{\document}
-% We begin by installing hooks into \cmd\document\ that
-% we will manage ourselves.
-%
-% The 2020-10-01 \LaTeX{} release got a new hook management system and
-% several new hooks (several previously provided by \textsf{etoolbox}).
-% The one we want here is \texttt{begindocument/before}, the first thing
-% executed by \cmd\document{}, right after ending the group started by
-% \cmd\begin{}.
-%
-% Thus, if the \LaTeX{} kernel date is 2020-10-01 we just add to that
-% hook, otherwise resort to the old method, patching \cmd\document:
-% end the group started by \cmd\begin, apply our hook, and
-% conclude our shenanigans by absorbing
-% the first token of the expansion of \cmd\document, which
-% we assume to be \cmd\endgroup{} (true until the aforementioned release).
-% \changes{4.1a}{2008/08/12}{Get rid of \cs{set@typesize@hook} \cs{set@pica@hook} and the \cs{normalsize} directive}%
-% \changes{4.2d}{2020/09/17}{(PHO) Use \LaTeX's hook management system, if possible.}%
-%    \begin{macrocode}
-\rvtx@ifformat@geq{2020/10/01}%
-  {%
-    \AddToHook{begindocument/before}{\document@inithook}%
-  }{%
-    \prepdef\document{%
-     \endgroup
-     \document@inithook
-     \true@sw{}%
-    }%
-  }
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\document@inithook}
-% To use, simply \cmd\appdef\cmd\document@inithook\arg{your tokens here}.
-%    \begin{macrocode}
-\let\document@inithook\@empty
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\class@documenthook}
-% \begin{macro}{\class@enddocumenthook}
-% \changes{4.1a}{2008/08/12}{\cs{class@documenthook} is the last \cs{AtBeginDocument} token now}
-% We install the last \cmd\AtBeginDocument\ hook, namely the 
-% procedure \cmd\class@documenthook. Within the document class,
-% we will use this hook exclusively, so as to avoid interference from other packages.
-% Similarly with \cmd\class@enddocumenthook, installed via \cmd\AtEndDocument.
-%
-% A document class using this package should do as this package does and just say, 
-% \cmd\appdef\ \cmd\class@documenthook\ instead of \cmd\AtBeginDocument,
-% and \cmd\appdef\ \cmd\class@enddocumenthook\ instead of \cmd\AtEndDocument.
-%    \begin{macrocode}
-\appdef\document@inithook{%
- \AtBeginDocument{\class@documenthook}%
-}%
-\AtEndDocument{%
- \class@enddocumenthook
-}%
-\let\class@documenthook\@empty
-\let\class@enddocumenthook\@empty
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\enddocument}
-% \begin{macro}{\check@aux}
-% \begin{macro}{\do@check@aux}
-% \changes{4.1n}{2009/12/05}{(AO, 569) Use of \classname{hyperref} interferes with column balancing of last page}%
-% The standard \LaTeX\ \enve{document} processing is a potential problem,
-% particularly when the output routine has been changed by \classname{ltxgrid}.
-% We separate out the procedure that checks the auxiliary file at the end of
-% the job so that later it can be called from the safety of the output
-% routine.
-% We will do this to ensure that the \cmd\@mainaux\ stream is not closed until
-% the last page of the job is shipped out, and that can only be done by coordinating
-% with the output routine.
-%
-% \changes{4.2d}{2020/09/17}{(PHO) Only redefine \cs{enddocument} in older versions.}%
-% This approach, however, will only be done for older versions of the
-% \LaTeX{} kernel:
-%    \begin{macrocode}
-\rvtx@ifformat@geq{2020/10/01}{%
-  % <definitions for newer LaTeX later>
-}{%
-  % <definitions for older LaTeX>
-\def\enddocument{%
-%    \end{macrocode}
-% \changes{4.1n}{2009/12/06}{(AO) Incorporate change to ltmiscen.dtx v1.1i 2000/05/19}%
-% The following line from \filename{ltmiscen.dtx} `resets \cmd\AtEndDocument for latex/3060'.
-%    \begin{macrocode}
- \let\AtEndDocument\@firstofone
-%    \end{macrocode}
-%    \begin{macrocode}
- \@enddocumenthook
- \@checkend{document}%
-%    \end{macrocode}
-% The \cmd\clear@document\ statement ends the current page (we must guarantee no further shipouts),
-% then executes all cleanup procedures that must occur only after the last shipout.
-% Clients will queue up their procedures via \cmd\AfterLastShipout, if it exists, otherwise by doing \cmd\appdef\cmd\clear@document. 
-%    \begin{macrocode}
- \clear@document
-%    \end{macrocode}
-% We are very close to ending the \TeX\ run, now.
-%    \begin{macrocode}
- \check@aux
- \deadcycles\z@
- \@@end
-}%
-\def\check@aux{\do@check@aux}%
-\def\do@check@aux{%
- \@if@sw\if@filesw\fi{%
-  \immediate\closeout\@mainaux
-  \let\@setckpt\@gobbletwo
-  \let\@newl@bel\@testdef
-  \@tempswafalse
-  \makeatletter
-  \input\jobname.aux\relax
- }{}%
- \@dofilelist
- \@ifdim{\font@submax >\fontsubfuzz\relax}{%
-  \@font@warning{%
-   Size substitutions with differences\MessageBreak
-   up to \font@submax\space have occured.\@gobbletwo
-  }%
- }{}%
- \@defaultsubs
- \@refundefined
- \@if@sw\if@filesw\fi{%
-  \@ifx{\@multiplelabels\relax}{%
-   \@if@sw\if@tempswa\fi{%
-    \@latex@warning@no@line{%
-     Label(s) may have changed.
-     Rerun to get cross-references right%
-    }%
-   }{}%
-  }{%
-    \@multiplelabels
-  }%
- }{}%
-}%
-}
-%    \end{macrocode}
-%
-% \changes{4.2d}{2020/09/17}{(PHO) Patch \cs{enddocument} at runtime in newer versions.}%
-% \begin{macro}{\rvtx@enddocument@patch}
-%   For newer \LaTeX{} we'll try to be a bit more future-proof
-%   (no miracle though).  The code for \cmd\enddocument{}
-%   (in pre-2020-10-01 \LaTeX) is roughly:
-%   \begin{verbatim}
-%   \def\enddocument{%
-%     <hooks and bookkeeping>
-%     \clearpage
-%     <read main .aux and final checks>
-%     \@@end
-%   }
-%   \end{verbatim}
-%   and the patches above replace the \cmd\clearpage{} by its own
-%   \cmd\clear@document, and \verb|<read main .aux and final checks>| by
-%   \cmd\do@check@aux, which it can later control the timing.
-%
-%   Now we will apply the same changes, but this time without redefining
-%   \cmd\enddocument:  we will instead replace tokens on-the-fly, when
-%   \cmd\enddocument{} is expanded.  This will grant us a slightly safer
-%   approach that won't depend so much on the internals of
-%   \cmd\enddocument.
-%
-%   This entire patch should work with the previous definition of
-%   \cmd\enddocument{} as well (except it cannot be used in the hook),
-%   but for now leave previous versions untouched.
-%
-%   The entire patching will reside in the \texttt{enddocument} hook:
-%    \begin{macrocode}
-\rvtx@ifformat@geq{2020/10/01}{%
-  \AddToHook{enddocument}{\rvtx@enddocument@patch{}}%
-}{}
-%    \end{macrocode}
-%
-%   This macro will be executed after \cmd\enddocument{} has expanded,
-%   so all its tokens are now exposed.  Here we will assume that
-%   \cmd\enddocument{} contains the tokens \verb|\@checkend{document}|
-%   and \cmd\endgroup, and use them as delimiters:
-%    \begin{macrocode}
-\protected\long\def\rvtx@enddocument@patch#1#2\@checkend#3{%
-  \begingroup
-    \edef\x{\detokenize{#3}}%
-    \edef\y{\detokenize{document}}%
-  \expandafter\endgroup
-  \ifx\x\y
-    \expandafter\rvtx@enddocument@patch@end
-  \else
-    \expandafter\rvtx@enddocument@patch@more
-  \fi
-    {#1#2}{#3}}
-\def\rvtx@enddocument@patch@more#1#2{%
-  \rvtx@enddocument@patch{#1\@checkend{#2}}}
-%    \end{macrocode}
-%
-%   When the \verb|\@checkend{document}| is reached, use \cmd\clearpage{}
-%   and \cmd\enddocument{} as delimiters for the
-%   \verb|<read main .aux and final checks>| part, and save it in
-%   \cmd\do@check@aux{}:
-%    \begin{macrocode}
-\long\def\rvtx@enddocument@patch@end#1#2\clearpage#3\endgroup{%
-  \def\do@check@aux{#3\endgroup}%
-%    \end{macrocode}
-%   Then execute the code consumed in the previous step:
-%    \begin{macrocode}
-  #1%
-  \@checkend{#2}%
-%    \end{macrocode}
-%   Do \cmd\clear@document{} instead of \cmd\clearpage{} and
-%   \cmd\check@aux{} instead of the code grabbed.
-%    \begin{macrocode}
-  \clear@document
-  \check@aux}
-\def\check@aux{\do@check@aux}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\clear@document}
-% \changes{4.1n}{2009/12/05}{(AO, 569) Use of \classname{hyperref} interferes with column balancing of last page}%
-% The procedure \cmd\clear@document\ is responsible for flushing out the last page of the document,
-% if not already done. 
-% The procedure then executes those procedures that must wait for execution until
-% after the last page is shipped out. 
-% Clients of \classname{ltxutil}, such as \classname{ltxgrid} and \classname{revtex4}
-% will queue these procedures up via \cmd\AfterLastShipout, if it exists, otherwise by doing \cmd\appdef\cmd\clear@document. 
-% 
-% The command \cmd\Call@AfterLastShipout\ is provided by Heiko Oberdiek's \classname{atveryend} package.
-% This package is compatible with \classname{ltxutil}. 
-%
-% Note on compatibility with \classname{atveryend}: 
-% we arrange for \cmd\Call@AfterLastShipout\ to be called from the safety of the output routine,
-% thereby ensuring that all of the procedures queued up by that package's
-% \cmd\AfterLastShipout\ are executed at the right time.
-% We also ensure that \cmd\Call@AfterLastShipout\ has a default definition, in case the package was never loaded. 
-% \changes{4.1n}{2009/12/09}{(AO, 569) execute \classname{atveryend}'s \cs{Call@AfterLastShipout} at the proper time}%
-%    \begin{macrocode}
-\def\clear@document{%
- \clearpage
- \do@output@cclv{%
-  \Call@AfterLastShipout
- }%
-}%
-\appdef\class@documenthook{%
- \providecommand\Call@AfterLastShipout{}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \subsection{Class Extensions}%
-% \changes{4.1a}{2008/08/12}{Class extension mechanism \cs{class@extension}, \cs{class@extensionfile}, and \cs{class@ext@hook}.}
-% The \LaTeX\ procedure \cmd\@onefilewithoptions\ is the vehicle for reading in 
-% a \LaTeX\ class or package. 
-% The APS RevTeX class implements the use of what are called ``substyles'',
-% actually extensions to the class itself. 
-% Any document class can do likewise. 
-% 
-% \begin{macro}{\class@extension}
-% \begin{macro}{\class@extensionfile}
-% \begin{macro}{\class@ext@hook}
-% A procedure similar to \LaTeX's \cmd\@onefilewithoptions, but as an extension to the
-% current document class. 
-% 
-% Read in the given file as if it were a document class file.
-% Usage: \cmd\class@extensionfile\ \arg{class} \cmd\@extension,
-% where \marg{class} is a file (similar to \file{aps.rtx}) and where \cmd\@extension\ is 
-% the file extension for \marg{class}. 
-% For instance, to read in  the file \file{aps.rtx}, 
-% do \cmd\class@extensionfile\ \texttt{\{aps\}} \cmd\substyle@ext,
-% where the latter has been define to expand to \file{.rtx}. 
-%
-% Features supported include
-% passing existing class options on to the class extension,
-% \cmd\AtEndOfClass\ processing,
-% a stack that restores \cmd\@currname, \cmd\@currext, \cmd\@clsextension, and the \cmd\catcode\ of `@',
-% fall-back to a control sequence name (with leading `rtx@') if no file exists.
-%
-% Note that \cmd\LoadClass\ gives one the ability to write a class that calls in 
-% another class as a (sort of) module: this scheme is like \cmd\LoadClass, but
-% turned inside out. 
-%    \begin{macrocode}
-\def\class@extension#1#2{%
- \IfFileExists{#1.#2}{%
-  \expandafter\class@extensionfile\csname ver@\@currname.\@currext\endcsname{#1}#2%
- }{%
-  \csname rtx@#1\endcsname
- }%
-}%
-\def\class@extensionfile#1#2#3{%
- \@pass@ptions#3\@unusedoptionlist{#2}%
- \global\let\@unusedoptionlist\@empty
- \expandafter\class@ext@hook\csname#2.#3-h@@k\endcsname#1{#2}#3%
-}%
-\def\class@ext@hook#1#2#3#4{%
- \@pushfilename@ltx
- \makeatletter
- \let\CurrentOption\@empty
- \@reset@ptions
- \let#1\@empty
- \xdef\@currname{#3}%
- \global\let\@currext#4%
- \global\let\@clsextension\@currext
- \input{#3.#4}%
- \@ifl@ter#4{#3}#2{%
-  \class@info{Class extension later than: #2}%
- }{%
-  \class@info{Class extension earlier: #2}%
-  \@@end
- }%
- #1%
- \let#1\@undefined
- \expandafter\@p@pfilename@ltx\@currnamestack@ltx\@nil
- \@reset@ptions
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@pushfilename}
-% \begin{macro}{\@p@pfilename}
-% \changes{4.1a}{2008/08/12}{Class extension mechanism \cs{@pushfilename@ltx} and \cs{@p@pfilename@ltx}.}
-% But! \LaTeX\ does not provide for a class extension other than \file{.cls}, therefore we 
-% must extend \LaTeX's file name stack with the file extension of a class extension. 
-% This way, procedures like 
-% \cmd\ProvidesPackage, \cmd\OptionNotUsed, \cmd\ProcessOptions, \cmd\@reset@ptions\ 
-% will still work properly. 
-%    \begin{macrocode}
-\def\@pushfilename@ltx{%
- \xdef\@currnamestack@ltx{%
-  {\@currname}%
-  {\@currext}%
-  {\@clsextension}%
-  {\the\catcode`\@}%
-  \@currnamestack@ltx
- }%
-}%
-\def\@p@pfilename@ltx#1#2#3#4#5\@nil{%
- \gdef\@currname{#1}%
- \gdef\@currext{#2}%
- \gdef\@clsextension{#3}%
- \catcode`\@#4\relax
- \gdef\@currnamestack@ltx{#5}%
-}%
-\global\let\@currnamestack@ltx\@empty
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% We carefully patch \LaTeX\ so that the current value of \cmd\@clsextension\ can be
-% restored after reading in a class file. 
-%
-% \subsection{Type Tools}%
-%
-% \begin{macro}{\flushing}
-% Undoes \cmd\centering. Should also undo \cmd\raggedleft\ and \cmd\raggedright.
-%    \begin{macrocode}
-\def\flushing{%
-  \let\\\@normalcr
-  \leftskip\z@skip
-  \rightskip\z@skip
-  \@rightskip\z@skip
-  \parfillskip\@flushglue
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \changes{4.1g}{2009/10/07}{(AO, 539) Use of double-backslash in argument of \cs{section} gives error. The \classname{textcase} package is involved.}%
-% \begin{macro}{\@centercr}
-% The \cmd\@centercr\ command is the replacement for \cmd\@normalcr\ when setting type centered or ragged.
-% Normally, the meaning of \cmd\\ is \cmd\@normalcr, which \LaTeX\ defines via \cmd\DeclareRobustCommand.
-% In centered or ragged typesetting, the meaning of \cmd\\ is \cmd\@centercr,
-% therefore it ought to to be defined via \cmd\DeclareRobustCommand\ (but unfortunately is not).
-% The fact that it is not is yet another of \LaTeX's early failures that will never get fixed.
-%
-% The following exemplar fails under \LaTeX\ version 2005/12/01, package \classname{textcase} 2004/10/07 v0.07:
-%    \begin{verbatim}
-%\documentclass{article}%
-%\usepackage[overload]{textcase}
-%\begin{document}
-%\centering
-%\section{\MakeTextUppercase{Section\\title}}
-%Text
-%\end{document}
-%    \end{verbatim}
-% The solution is to promote \cmd\@centercr\ to a robust command, just the same as \cmd\\.
-% We do that here without needing to know the meaning of the command.
-%    \begin{macrocode}
-\expandafter\DeclareRobustCommand\expandafter\@centercr\expandafter{\@centercr}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Display Math}%
-%
-% \begin{macro}{\eqnarray@LaTeX}
-% \begin{macro}{\eqnarray@fleqn@fixed}
-% Team \LaTeX\ has stated they will never repair Leslie's broken definition of \env{eqnarray}.
-% Let us be bold\dots.
-%
-% Note on \classname{hyperref} package compatibility: that package overrides
-% \cmd\eqnarray\ by wrapping it up in a larger procedure, so its changes
-% are compatible with this package's changes.
-%
-% \changes{4.1a}{2008/01/19}{(AO, 475) I had not properly reproduced the LaTeX macro \cs{eqnarray}.}%
-% \changes{4.2f}{2022/06/05}{(PHO) Fix detection of \cs{eqnarray} in newer \LaTeX.}%
-%    \begin{macrocode}
-\def\rvtx@tmpa#1{%
-\def\eqnarray@LaTeX{%
-   \stepcounter{equation}%
-   \def\@currentlabel{\p@equation\theequation}%
-   #1% \def\@currentcounter{equation} on newer LaTeX
-   \global\@eqnswtrue
-   \m@th
-   \global\@eqcnt\z@
-   \tabskip\@centering
-   \let\\\@eqncr
-   $$\everycr{}\halign to\displaywidth\bgroup
-       \hskip\@centering$\displaystyle\tabskip\z@skip{####}$\@eqnsel
-      &\global\@eqcnt\@ne\hskip \tw@\arraycolsep \hfil${####}$\hfil
-      &\global\@eqcnt\tw@ \hskip \tw@\arraycolsep
-         $\displaystyle{####}$\hfil\tabskip\@centering
-      &\global\@eqcnt\thr@@ \hb@xt@\z@\bgroup\hss####\egroup
-         \tabskip\z@skip
-      \cr
-}%
-\long\def\eqnarray@fleqn@fixed{%
- \stepcounter{equation}\def\@currentlabel{\p@equation\theequation}%
- #1% \def\@currentcounter{equation} on newer LaTeX
- \global\@eqnswtrue\m@th\global\@eqcnt\z@
- \tabskip\ltx@mathindent
- \let\\=\@eqncr
- \setlength\abovedisplayskip{\topsep}%
- \ifvmode\addtolength\abovedisplayskip{\partopsep}\fi
- \addtolength\abovedisplayskip{\parskip}%
- \setlength\belowdisplayskip{\abovedisplayskip}%
- \setlength\belowdisplayshortskip{\abovedisplayskip}%
- \setlength\abovedisplayshortskip{\abovedisplayskip}%
- $$%
- \everycr{}%
- \halignt@\linewidth\bgroup
-  \hskip\@centering$\displaystyle\tabskip\z@skip{####}$\@eqnsel
-  &\global\@eqcnt\@ne
-   \hskip\tw@\eqncolsep
-   \hfil${{}####{}}$\hfil
-  &\global\@eqcnt\tw@
-   \hskip\tw@\eqncolsep
-   $\displaystyle{####}$\hfil\tabskip\@centering
-  &\global\@eqcnt\thr@@\hb@xt@\z@\bgroup\hss####\egroup
-   \tabskip\z@skip
-  \cr
-}%
-}
-\rvtx@tmpa{}% older LaTeX
-\@ifx{\eqnarray\eqnarray@LaTeX}{\@firstofone}
-  {%
-    \rvtx@tmpa{\def\@currentcounter{equation}}% newer LaTeX
-    \@ifx{\eqnarray\eqnarray@LaTeX}{\@firstofone}
-      {\@gobble}
-  }
-{%
- \class@info{Repairing broken LaTeX eqnarray}%
- \let\eqnarray\eqnarray@fleqn@fixed
- \newlength\eqncolsep
- \setlength\eqncolsep\z@
- \let\eqnarray@LaTeX\relax
- \let\eqnarray@fleqn@fixed\relax
-}%
-%    \end{macrocode}
-% The macro \cmd\ltx@mathindent\ is assigned to the \cmd\tabskip\ glue just
-% before the alignment preamble is expanded, the value therefore applying at the
-% left of the first column.
-%
-% The below value specifies the display math to be set centered, as is common practice.
-% Alternatively, \cmd\tabskip\ can be set to a different glue value, accomplishing 
-% flush-left display math. 
-% 
-% Note that the \filename{fleqn.clo} package provides its own meaning for 
-% the eqnarray environment, which is also broken. We do not patch that package, however.
-% 
-% \changes{4.1d}{2009/03/27}{(AO, 511) Compatability with lineno.sty's erroneous way of detecting fleqn.clo}%
-% Bug note: The \filename{lineno.sty} package detects \filename{fleqn.clo} 
-% by testing whether \cmd\mathindent\ is defined, instead of using correct \LaTeXe\ means.
-% Even though our eqnarray environment is modelled after \filename{fleqn.clo},
-% we must program defensively here. 
-%    \begin{macrocode}
-\def\ltx@mathindent{\@centering}%
-\def\set@eqnarray@skips{}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% 
-% \changes{4.1g}{2009/10/07}{(AO, 525) Remove phantom paragraph above display math that is given in vertical mode}%
-%\begin{macro}{\prep@math}
-%\begin{macro}{\prep@math@patch}
-% If we are in vertical mode when display math mode is entered (via \verb+$$+), 
-% \TeX\ will first enter horizontal mode, then display math mode; this results in a phantom paragraph
-% containing a single \cmd\hbox\ consisting of the \cmd\parindent\ box followed by the \cmd\parskipfillskip\ glue. 
-% Of course, that \cmd\hbox\ is accompanied by \cmd\parskip\ glue and \cmd\baselineskip\ glue.
-%
-% The \cmd\prep@math\ procedure removes the \cmd\parindent\ box, thereby (magically) eliminating the phantom paragraph.
-% The \cmd\prep@math@patch\ procedure headpatches the \env{equation} and \env{eqnarray} environments
-% to accomplish this removal of the phantom paragraph.
-%
-% Note that there are three remaining ways to enter display math mode that we do not treat:
-% the \env{displaymath} environment (equivalent to \cmd\[/\cmd\]), and the primitive the \verb+$$+ markup.
-% I refrain from treating the first case because \env{displaymath} already detects the case
-% where it is entered from vertical mode: I do not wish to engage in the dubious enterprise of attempting to correct a procedure that is ill conceived from the outset. 
-% As to the primitive \verb+$$+, there is no help for users who insist upon employing procedural markup in their documents. 
-% in their documents.
-%    \begin{macrocode}
-\def\prep@math{%
- \@ifvmode{\everypar{{\setbox\z@\lastbox}}}{}%
-}%
-\def\prep@math@patch{%
- \prepdef\equation{\prep@math}%
- \prepdef\eqnarray{\prep@math}%
-}%
-%    \end{macrocode}
-% A document class may invoke \cmd\prep@math@patch\ at any point it wishes to prevent the appearance
-% of the phantom paragraph: it may be a global declaration or a local one.
-% \end{macro}
-% \end{macro}
-%
-% We fail to patch \cmd\[, \cmd\equation, however.
-%
-% \subsection{Footnotes}
-%
-% \changes{4.0d}{2000/04/10}{(AO, 174) kernel fix}
-% 
-% \begin{macro}{\footnotemark}
-% \begin{macro}{\footnotetest}
-% \begin{macro}{\ltx@xfootnote}
-% \begin{macro}{\ltx@footmark}
-% \begin{macro}{\ltx@foottext}
-% \begin{macro}{\ltx@make@current@footnote}
-% We repair an error in the \LaTeX\ kernel (see \file{ltfloat.dtx}) involving footnotes.
-% The symptom is that the \cmd\footnotemark\ command does not work properly within a \env{minipage} environment.
-% The source of the problem is in the way the \cmd\footnotemark\ and \cmd\@xfootnotemark\ procedures are defined:
-% they do not share the method, used by \cmd\footnote\ and other procedures, that allows a context switch to 
-% change the way footnotes behave within a minipage environment.
-% This is a \LaTeX\ bug of long standing; our fix dates to 1987. 
-%
-% While we are at it, we rewrite both the \cmd\footnote, \cmd\footnotemark\ and \cmd\footnotetext\ procedures,
-% achieving a cleaner separation of syntax and semantics. 
-% Note that the \cmd\@footnotetext\ procedure is not involved in context switching; 
-% \classname{hyperref} will take over that procedure, substituting its own processing around
-% its argument and passing this to \cmd\H@@footnotetext. 
-% We anticipate this, and do our context switching on \cmd\H@@footnotetext.
-%
-% The \cmd\@makefnmark\ continues as the method of formatting the footnote mark. 
-%
-% A note about the context switch mentioned above:
-% the \env{minipage} environment executes the following in order to alter the way footnotes
-% behave:\begin{verbatim}
-%\def\@mpfn{mpfootnote}%
-%\def\thempfn{\thempfootnote}%
-%\let\@footnotetext\@mpfootnotetext
-%\let\@makefnmark\@mpmakefnmark
-%\c@mpfootnote\z@\end{verbatim}
-% This code changes the counter used in autonumbered footnotes, the choice of footnote marker,
-% and the procedure used on the footnote text. Changing the counter is needed because minipage
-% footnotes are in their own sequence, and the footnote marker is customarily different within
-% a minipage. The procedure that works on the footnote text must be different because the footnotes
-% are placed at the bottom of the minipage, not the bottom of the text column.
-%
-% Note that \LaTeX\ initially defines \cmd\@mpfn\ as \texttt{footnote} and \cmd\thempfn\ as \cmd\thefootnote,
-% so we are initially doing general footnotes. 
-%
-% Any procedure that establishes a minipage-like context (e.g., floats) can do the same as the mimipage context switch 
-% illustrated above.
-% \changes{4.1a}{2008/06/30}{(AO, 438) Complete rewrite of footnote macros.}
-%
-% Three user-level command, \cmd\footnote, \cmd\footnotemark, and \cmd\footnotetext\ are defined (see the \LaTeX\ manual for user-level details).
-% \begin{macro}{\footnote}
-% The first user-level command is \cmd\footnote. 
-% A simple way to look at this command is to think of it as
-% \cmd\footnotemark\ \oarg{number} \cmd\footnotetext\ \oarg{number} \arg{text},
-% where the optional argument is the same in both calls.
-% We also define a syntactical helper procedure \cmd\ltx@xfootnote.
-% 
-% We employ the procedures \cmd\ltx@stp@footproc\ and \cmd\ltx@def@footproc,
-% passing in the procedure to execute, in this case \cmd\ltx@footmark,
-% which sets the footnote mark.
-% In any case, we end on the procedure \cmd\ltx@foottext, which sets the footnote text.
-%    \begin{macrocode}
-\def\footnote{\@ifnextchar[\ltx@xfootnote\ltx@yfootnote}%
-\def\ltx@xfootnote[#1]{%
- \ltx@def@footproc\ltx@footmark[#1]%
- \expandafter\ltx@foottext\expandafter{\the\csname c@\@mpfn\endcsname}%
-}%
-\def\ltx@yfootnote{%
- \ltx@stp@footproc\ltx@footmark
- \expandafter\ltx@foottext\expandafter{\the\csname c@\@mpfn\endcsname}%
-}%
-%    \end{macrocode}
-% The \cmd\footmark\ user-level command is next. 
-% Here we use the procedures \cmd\ltx@stp@footproc\ and \cmd\ltx@def@footproc\ again,
-% but unlike \cmd\footnote, we do not set the footnote text.
-%    \begin{macrocode}
-\def\footnotemark{\@ifnextchar[\ltx@xfootmark\ltx@yfootmark}%
-\def\ltx@xfootmark{\ltx@def@footproc\ltx@footmark}%
-\def\ltx@yfootmark{\ltx@stp@footproc\ltx@footmark}%
-\def\ltx@footmark#1{%
- \leavevmode
- \ifhmode\edef\@x@sf{\the\spacefactor}\nobreak\fi
- \begingroup
-  \expandafter\ltx@make@current@footnote\expandafter{\@mpfn}{#1}%
-  \expandafter\@argswap@val\expandafter{\Hy@footnote@currentHref}{\hyper@linkstart {link}}%
-   \@makefnmark
-  \hyper@linkend
- \endgroup
- \ifhmode\spacefactor\@x@sf\fi
- \relax
-}%
-%    \end{macrocode}
-% The third user-level command is \cmd\footnotetext.
-% As with \cmd\footnotemark, we use the procedures \cmd\ltx@stp@footproc\ and \cmd\ltx@def@footproc,
-% this time passing in the procedure \cmd\ltx@foottext, which sets the footnote text.
-%    \begin{macrocode}
-\def\footnotetext{\@ifnextchar[\ltx@xfoottext\ltx@yfoottext}%
-\def\ltx@xfoottext{\ltx@def@footproc\ltx@foottext}%
-\def\ltx@yfoottext{\ltx@stp@footproc\ltx@foottext}%
-\long\def\ltx@foottext#1#2{%
- \begingroup
-  \expandafter\ltx@make@current@footnote\expandafter{\@mpfn}{#1}%
-  \@footnotetext{#2}%
- \endgroup
-}%
-%    \end{macrocode}
-% Here are the definitions of the procedures \cmd\ltx@stp@footproc\ and \cmd\ltx@def@footproc.
-% The require argument is the procedure to execute afterwards, and
-% \cmd\ltx@def@footproc\ parses a bracket-delimited argument (it is not optional).
-% In each case the given procedure is executed with an argument prepared for it:
-% the value of the footnote counter.
-%    \begin{macrocode}
-\def\ltx@def@footproc#1[#2]{%
- \begingroup
-   \csname c@\@mpfn\endcsname #2\relax
-   \unrestored@protected@xdef\@thefnmark{\thempfn}%
- \expandafter\endgroup
- \expandafter#1%
- \expandafter{\the\csname c@\@mpfn\endcsname}%
-}%
-\def\ltx@stp@footproc#1{%
- \expandafter\stepcounter\expandafter{\@mpfn}%
- \protected@xdef\@thefnmark{\thempfn}%
- \expandafter#1%
- \expandafter{\the\csname c@\@mpfn\endcsname}%
-}%
-%    \end{macrocode}
-% Here we provide for our good friend \classname{hyperref} 
-% to enter in like a bull in a china shop. If it is not loaded,
-% we do what it would have done, but gentlier and without hypertext functionality.
-%    \begin{macrocode}
-\appdef\class@documenthook{%
- \let\footnote@latex\footnote
- \@ifpackageloaded{hyperref}{}{%
-  \let\H@@footnotetext\@footnotetext
-  \def\@footnotetext{\H@@footnotetext}%
-  \let\H@@mpfootnotetext\@mpfootnotetext
-  \def\@mpfootnotetext{\H@@mpfootnotetext}%
- }%
-}%
-%    \end{macrocode}
-% In the following, we must use \LaTeX's rococco equipment in the form of \cmd\protected@edef,
-% because of the presence of a font switch in the meaning of \cmd\thempfootnote.
-% But, really, isn't this a sloppy conflation of semantics and presentation?
-%    \begin{macrocode}
-\def\ltx@make@current@footnote#1#2{%
-  \csname c@#1\endcsname#2\relax
-  \protected@edef\Hy@footnote@currentHref{\@currentHref-#1.\csname the#1\endcsname}%
-}%
-\def\thempfootnote@latex{{\itshape \@alph \c@mpfootnote }}%
-\def\ltx@thempfootnote{\@alph\c@mpfootnote}%
-\@ifx{\thempfootnote\thempfootnote@latex}{%
- \class@info{Repairing hyperref-unfriendly LaTeX definition of \string\mpfootnote}%
- \let\thempfootnote\ltx@thempfootnote
-}{}%
-%    \end{macrocode}
-%
-% Note on \classname{hyperref} compatibility:
-% In its ``Automated \LaTeX\ hypertext cross-references'',
-% the \classname{hyperref} package alters footnote processing,
-% but it does nothing to address the several issues of concern to us.
-%
-% The \classname{hyperref} package takes over the \cmd\@mpfootnotetext\ and 
-% \cmd\@footnotetext\ procedures, wrapping the argument in its own code.
-% It also rewrites \cmd\@footnotemark, making it a hyperlink, and
-% \cmd\@xfootnotenext, removing from it all hypertext capabilities. 
-%
-% However, if the \cmd\footnotemark\ command has been supplied with an optional argument,
-% \classname{hyperref}'s changes do not apply: it punts in this case.
-%
-% At the same time, it attempts to turn off its changes during 
-% \cmd\maketitle\ processing, destroying one of the capabilities we desire. 
-%
-% We make ourself \classname{hyperref} savvy:
-% we re-implement footnote processing, using \classname{hyperref} capabilities if that 
-% package has been loaded. 
-%
-% Any other package that rewrites \LaTeX's footnote macros will be incompatible
-% with this package.
-% \changes{4.1a}{2008/06/30}{(AO) Remove code that avoided changes to \cs{@xfootnotemark}}%
-%
-% Two thoughts about \classname{hyperref}: what for does it define \cmd\realfootnote?
-% Apparently even SR himself cannot remember.
-%
-% Also: a document class that desires high hypertext capabilities might
-% well wish to reimplement \cmd\maketitle\ so that footnotes called out from there
-% are hypertext links: the \classname{hyperref} package's 
-% ``Automated \LaTeX\ hypertext cross-references''
-% does not do any of this:
-%\begin{quotation}
-% But the special footnotes in |\maketitle| are much too hard to deal with properly.
-% Let them revert to plain behaviour.
-%\end{quotation}
-% Note that the document class, in reimplementing \cmd\maketitle, must ensure
-% that the \classname{hyperref} package does not clobber its own definition!
-%
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@footnotetext}
-% \begin{macro}{\@mpfootnotetext}
-% \begin{macro}{\@tpfootnotetext}
-% \begin{macro}{\make@footnotetext}
-% \begin{macro}{\set@footnotewidth}
-% The two procedures \cmd\@footnotetext\ and \cmd\@mpfootnotetext\ share code.
-% We make that explicit here.
-%
-% Note that the procedure calling \cmd\make@footnotetext\ will open a group
-% with \cmd\bgroup\ which is then closed by \cmd\minipagefootnote@drop.
-%
-% Difference from \LaTeX: here we do not set \cmd\floatingpenalty\ to infinity.
-% Doing this must date back to a time when \LaTeX\ could not accomodate split insertions (footnotes).
-% I cannot think of any other reason to do have done this.
-% At any rate, with the \classname{ltxgrid} package, split insertions are properly
-% taken care of, so we allow it.
-%
-% We provide the hook \cmd\set@footnotewidth\
-% that sets the footnote on a particular measure.
-% Some page grids are such as to set a footnote in a context where \cmd\columnwidth
-% is not the right parameter to use for the set width of a footnote.
-% In such a case, for the applicable scope, you should define
-% \cmd\set@footnotewidth\ to perform this job correctly.
-% 
-% If we are setting type on multiple page grids, we must still ensure that all footnotes that 
-% find their way into the \cmd\footins\ insert register are set on the same width. 
-% This implies the need for a document to have an ``overall'' page grid, which determines the set width of all footnotes
-% with the exception of minipage footnotes. 
-%
-% In general, remember that footnotes, like all insertions (including floats), 
-% are a step outside of the galley context, and all aspects of insertions need to be
-% properly handled, including the set width.
-%    \begin{macrocode}
-\def\@makefnmark{%
- \hbox{%
-  \@textsuperscript{%
-   \normalfont\itshape\@thefnmark
-  }%
- }%
-}%
-%    \end{macrocode}
-%    \begin{macrocode}
-\long\def\@footnotetext{%
- \insert\footins\bgroup
-  \make@footnotetext
-}%
-%    \end{macrocode}
-%    \begin{macrocode}
-\long\def\@mpfootnotetext{%
- \minipagefootnote@pick
-  \make@footnotetext
-}%
-%    \end{macrocode}
-% Procedure \cmd\make@footnotetext\ sets the footnote \verb+#1+ into type, with the proper 
-% font, color, leading, width, and label in effect. 
-% It also establishes a strut and null glue at the end of the last paragraph of the footnote;
-% The strut helps compensate for the lack of \cmd\interlineskip\ glue between \cmd\insert s;
-% the glue establishes a feasible \cmd\vsplit\ point between footnotes. 
-%
-% Note that in the title block (\classname{ltxfront}), the alternative definition, under the name \cmd\frontmatter@footnotetext, is used.
-% The only material difference there is the reference to \cmd\frontmatter@makefntext\ instead of \cmd\@makefntext. 
-% 
-% Dependency note: the \cmd\@makefntext\ procedure is used to further process the footnote text 
-% and to execute the \cmd\@makefnmark\ procedure to produce the footnote mark. 
-% The definition of the former is customarily found in the document class (hereunder that of \filename{article.cls}), 
-% the latter in \filename{latex.ltx}. They are as follows: 
-%    \begin{verbatim}
-%\newcommand\@makefntext[1]{%
-% \parindent 1em\noindent
-% \hb@xt@1.8em{\hss\@makefnmark}%
-% #1%
-%}%
-%\def\@makefnmark{%
-% \hbox{\@textsuperscript{\normalfont\@thefnmark}}%
-%}%
-%    \end{verbatim}
-% 
-% \changes{4.1n}{2010/01/06}{(AO, 572) title block footnotes numbered independently from body footnotes}%
-%    \begin{macrocode}
-\long\def\make@footnotetext#1{%
-  \set@footnotefont
-%    \end{macrocode}
-% As noted above, we do \emph{not} do \cmd\floatingpenalty\ \cmd\@MM, as in standard \LaTeX. 
-%    \begin{macrocode}
-  \set@footnotewidth
-  \@parboxrestore
-  \protected@edef\@currentlabel{%
-%    \end{macrocode}
-% Note that we employ \cmd\@mpfn\ as a level of redirection for the footnotecounter.
-%    \begin{macrocode}
-   \csname p@\@mpfn\endcsname\@thefnmark
-  }%
-  \color@begingroup
-   \@makefntext{%
-    \rule\z@\footnotesep\ignorespaces#1%
-%    \end{macrocode}
-% \changes{4.1n}{2010/01/02}{(AO, 571) allow split after last line of footnote}%
-% The following strut and glue are for spacing and splitting, as mentioned above. 
-%    \begin{macrocode}
-    \@finalstrut\strutbox\vadjust{\vskip\z@skip}%
-   }%
-  \color@endgroup
- \minipagefootnote@drop
-}%
-%    \end{macrocode}
-% \changes{4.1f}{2009/07/07}{(AO, 515) Hook for setting the font of a footnote}
-% \cmd\set@footnotefont\ is the procedure for setting the font of a footnote.
-% Other aspects of the environment may be set using this hook.
-%    \begin{macrocode}
-\def\set@footnotefont{%
-  \reset@font\footnotesize
-  \interlinepenalty\interfootnotelinepenalty
-  \splittopskip\footnotesep
-  \splitmaxdepth\dp\strutbox
-}%
-%    \end{macrocode}
-% \cmd\set@footnotewidth\ is the procedure for setting the width of a footnote.
-% The default page grid, a single, full-width column, sets footnotes on the width of the text. 
-% \changes{4.1n}{2010/01/02}{(AO, 571) Interface \cs{set@footnotewidth} for determining the set width of footnotes}%
-%    \begin{macrocode}
-\def\set@footnotewidth{\set@footnotewidth@one}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-%
-% \subsection{Floats}
-%
-% \subsubsection{Usage notes}%
-% We extend the \LaTeX\ kernel for three purposes:
-% \begin{enumerate}
-%
-% \item
-%  When the \cmd\footnote\ command is used within the
-%  scope of a float, we do as \env{minipage} does.
-%
-% \item
-%  We provide a mechanism to write floats out to an external
-%  stream for temporary storage (deferred floats).
-%
-% \item
-%  We provide mechanism for placing a float \texttt{here}
-%  invariably, that is, floats are unfloated.
-%  This mechanism is used to read the external stream mentioned above.
-%
-% \end{enumerate}
-%
-% To use these mechanisms, the document class should 
-% define a float, say, \env{figure} as per usual, and in addition:
-% \begin{enumerate}
-%
-% \item
-%  Optionally define an alternative, say \env{figure@write} as follows:
-%    \begin{verbatim}\newenvironment{figure@write}{%
-% \write@float{figure}%
-%}{%
-% \endwrite@float
-%}\end{verbatim}
-% That is, the alternative environment executes \cmd\write@float\
-% instead of \cmd\@float.
-% Note that this step is not needed if the float environment
-% is defined in the simple way of \file{classes.dtx}.
-% However, an environment like \env{longtable} will require it.
-%
-% \item
-%  Install into \cmd\AtBeginDocument\ a call to \cmd\do@if@floats,
-%  with the float name and an appropriate file extension as its arguments.
-%    \begin{verbatim}\appdef\class@documenthook{\do@if@floats{figure}{.fgx}}\end{verbatim}
-%  
-% \item
-%  Optionally define a text entity \cmd\figuresname\ that will
-%  be the text of the head that is set over the 
-%  deferred floats.
-%  If not defined, there will be no head.
-%  
-% \item
-%  Optionally define a user-level command to allow
-%  the document to determine where the figures are printed out
-%  (default is to print at end of document). E.g.,
-%    \begin{verbatim}\newcommand\printfigures{\print@float{figure}}\end{verbatim}
-% \item
-%  Install into \cmd\appdef\cmd\class@enddocumenthook\ a call to \cmd\printfigures,
-%  or, if the latter is not defined, as follows:
-%    \begin{verbatim}\appdef\class@enddocumenthook{\print@float{figure}}\end{verbatim}
-%  Note that installing this command into \cmd\AtBeginDocument
-%  is best done earlier than calls that assume the last page of
-%  the document is at hand.
-%  
-% \end{enumerate} 
-%
-% \subsubsection{Robustifying fragile commands}%
-% Certain of \LaTeX's  commands cannot be written out to a file or appear within a \cmd\mark\ command argument
-% because they do calculations during expansion.
-% We provide for a little help, but without changing the meanings of these commands.
-%
-% \begin{macro}{\addtocontents}
-% \begin{macro}{\robustify@contents}
-%
-% \changes{4.1a}{2008/06/30}{(AO) Make \cs{addtocontents} a \cs{long} \cs{def}; gobble up \cs{footnote}}%
-%    \begin{macrocode}
-\def\robustify@contents{%
- \let \label \@gobble
- \let \index \@gobble
- \let \glossary \@gobble
- \let\footnote \@gobble
- \def\({\string\(}%
- \def\){\string\)}%
- \def\\{\string\\}%
-}%
-\long\def\addtocontents#1#2{%
- \protected@write\@auxout{\robustify@contents}{\string \@writefile {#1}{#2}}%
-}%
-%    \end{macrocode}
-%
-% \end{macro}
-% \end{macro}
-%
-% \subsubsection{Preparing for the \classname{hyperref package}}%
-%
-% \begin{macro}{\addcontentsline}
-% \begin{macro}{\label}
-% \begin{macro}{\ltx@contentsline}
-% \changes{4.1b}{2008/08/12}{Refine toc processing: provide default.}%
-% The \classname{hyperref} package assumes that the \cmd\contentsline\ command will be given four arguments.
-% Therefore it cannot successfully process a \filename{.toc} file that had been written by standard \LaTeX.
-% We fix things up by always writing that fourth argument and by supplying a \cmd\contentsline\ command that
-% can read them.
-%
-% We also give the \cmd\newlabel\ command's second argument five tokens.
-%
-% Finally, we wrap \LaTeX's \cmd\contentsline\ command with code to detect the case
-% where the expected procedure is not defined, and we give it a syntax with no semantics.
-%
-% We switch over to this new definition only after \classname{hyperref} has loaded.
-%    \begin{macrocode}
-\def\addcontentsline#1#2#3{%
- \addtocontents{#1}{%
-  \protect\contentsline{#2}{#3}{\thepage}{}%
- }%
-}%
-\def\label#1{%
- \@bsphack
-  \protected@write\@auxout{}{%
-   \string\newlabel{#1}{{\@currentlabel}{\thepage}{}{}{}}%
-  }%
- \@esphack
-}%
-\def\ltx@contentsline#1{%
- \expandafter\@ifnotrelax\csname l@#1\endcsname{}{%
-  \expandafter\let\csname l@#1\endcsname\@gobbletwo
- }%
- \contentsline@latex{#1}%
-}%
-\appdef\document@inithook{%
- \let\contentsline@latex\contentsline
- \let\contentsline\ltx@contentsline
-}%
-%    \end{macrocode}
-%
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \subsubsection{Footnotes within floats, unfloating floats, float font}%
-%
-% \begin{macro}{\caption}
-% DPC: Er a bit of a hack, but seems best way of supporting normal
-% \LaTeX\ syntax at this point: If a caption is used below a table,
-% then put out the footnotes before the caption.
-% \changes{4.0b}{1999/06/20}{Support the hack with \cs{prepdef}, and delay until \cs{AtBeginDocument} time, since \classname{hyperref} clobbers \cs{caption}.}
-%    \begin{macrocode}
-\appdef\class@documenthook{%
- \prepdef\caption{\minipagefootnote@here}%
-}%
-%    \end{macrocode}
-%
-% Note on \classname{hyperref} compatibility:
-% this change to the \cmd\caption\ command is compatible with the
-% ``Automated \LaTeX\ hypertext cross-references'' patches of that package.
-%
-% All the same, I think Sebastian's changes to \cmd\caption\ and \cmd\@caption\
-% could bear with some improvement.
-% The following implementation requires knowing only the pattern part of the 
-% \cmd\@caption\ macro:
-%\begin{verbatim}
-%\def\caption{%
-%  \H@refstepcounter\@captype
-%  \hyper@makecurrent{\@captype}%
-%  \@dblarg{\H@caption\@captype}%
-%}%
-%\def\H@caption#1[#2]#3{%
-% \@caption{#1}[#2]{%
-%  \ifHy@nesting
-%   \hyper@@anchor{\@currentHref}{#3}%
-%  \else
-%   \hyper@@anchor{\@currentHref}{\relax}#3%
-%  \fi
-% }%
-%}\end{verbatim}
-%
-% \end{macro}
-%
-% \begin{macro}{\minipagefootnote@init}
-% \begin{macro}{\minipagefootnote@here}
-% \begin{macro}{\minipagefootnote@foot}
-% \begin{macro}{\minipagefootnote@pick}
-% \begin{macro}{\minipagefootnote@drop}
-% Procedure to deal with footnotes accumulated within a minipage environment.
-% These procedures encapsulate all uses of the \cmd\@mpfootins\ box.
-% 
-%
-% Note: \cmd\minipagefootnote@here\ must \emph{not} be executed within the MVL!
-%    \begin{macrocode}
-\def\minipagefootnote@init{%
- \setbox\@mpfootins\box\voidb@x
-}%
-\def\minipagefootnote@pick{%
- \global\setbox\@mpfootins\vbox\bgroup
-  \unvbox\@mpfootins
-}%
-\def\minipagefootnote@drop{%
- \egroup
-}%
-\def\minipagefootnote@here{%
-    \par
-    \@ifvoid\@mpfootins{}{%
-      \vskip\skip\@mpfootins
-      \fullinterlineskip
-      \@ifinner{%
-       \vtop{\unvcopy\@mpfootins}%
-       {\setbox\z@\lastbox}%
-      }{}%
-      \unvbox\@mpfootins
-    }%
-}%
-\def\minipagefootnote@foot{%
- \@ifvoid\@mpfootins{}{%
-  \insert\footins\bgroup\unvbox\@mpfootins\egroup
- }%
-}%
-\def\endminipage{%
-    \par
-    \unskip
-    \minipagefootnote@here
-    \@minipagefalse   %% added 24 May 89
-  \color@endgroup
-  \egroup
-  \expandafter\@iiiparbox\@mpargs{\unvbox\@tempboxa}%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\floats@sw}
-% \changes{4.1b}{2008/08/12}{Default assignment of \cs{float@sw} now, not at \cs{AtBeginDocument} time.}%
-% The Boolean \cmd\floats@sw\ signifies that floats are to be floated;
-% if false, that floats are to be deferred to the end of the document.
-% Note that the assignment of this Boolean is to be overridden by 
-% the document class in response to user-selected options.
-%    \begin{macrocode}
-\@booleantrue\floats@sw
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@xfloat}
-% \begin{macro}{\@mpmakefntext}
-% The float start-code is redefined to set up footnotes in the style of minipage.
-% Also, the \cmd\floats@sw\ Boolean informs us that floats are to be 
-% all placed \texttt{here}.
-% Note that, to protect against the Boolean being undefined
-% at this late hour, we default it globally to true.
-%
-% \changes{4.0b}{1999/06/20}{AO: Removed superfluous \cs{def}s, changed to using \cs{floats@sw} as the flag. Also stopped using DPC's \cs{if@twocolumn} flag: using \cs{floats@sw} instead. Also added \cs{par}\cs{vskip}\cs{z@skip} after the \cs{minipagefootnotes} so that the float box would have zero depth like the kernel one. }
-% \changes{4.0c}{1999/11/13}{(AO, 110) Install hooks for endfloats processing}
-% \changes{4.0d}{2000/04/10}{(AO, 127) Floats placed [h] to allow page breaks}
-% \changes{4.0d}{2000/05/19}{(AO, 224) Hyperref compatibility.}
-% \changes{4.0e}{2000/11/16}{(AO, 221) Remove samepage command from @xfloat@prep: If the float can break over pages, we want better control.}
-% \changes{4.1a}{2008/07/07}{\cs{@xfloat@prep} calls \cs{ltx@footnote@pop} to restore the original \cs{ltx@footmark} and \cs{ltx@foottext} procedures, in case footnote processing has switched.}
-% \changes{4.1b}{2008/08/12}{No need to protect against undefined \cs{float@sw}}
-%
-%    \begin{macrocode}
-\let\@xfloat@LaTeX\@xfloat
-\def\@xfloat#1[#2]{%
-  \@xfloat@prep
-  \@nameuse{fp@proc@#2}%
-  \floats@sw{\@xfloat@LaTeX{#1}[#2]}{\@xfloat@anchored{#1}[]}%
-}%
-\def\@xfloat@prep{%
-  \ltx@footnote@pop
-  \def\@mpfn{mpfootnote}%
-  \def\thempfn{\thempfootnote}%
-  \c@mpfootnote\z@
-  \let\H@@footnotetext\H@@mpfootnotetext
-}%
-\let\ltx@footnote@pop\@empty
-\def\@xfloat@anchored#1[#2]{%
- \def\@captype{#1}%
- \begin@float@pagebreak
-  \let\end@float\end@float@anchored
-  \let\end@dblfloat\end@float@anchored
-        \hsize\columnwidth
-        \@parboxrestore
-        \@floatboxreset
-  \minipagefootnote@init
-}%
-\def\end@float@anchored{%
-  \minipagefootnote@here
-  \par\vskip\z@skip
- \par
- \end@float@pagebreak
-}%
-\def\begin@float@pagebreak{\par\addvspace\intextsep}%
-\def\end@float@pagebreak{\par\addvspace\intextsep}%
-\def\@mpmakefntext#1{%
- \parindent=1em
- \noindent
- \hb@xt@1em{\hss\@makefnmark}%
- #1%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-%
-% \subsubsection{Writing floats out to a file}%
-%
-% \begin{macro}{\do@if@floats}
-% \changes{4.1b}{2008/08/12}{No need to protect against undefined \cs{float@sw}}
-% The procedure \cmd\do@if@floats\ should be executed at
-% \cmd\class@documenthook\ time: it arranges to write out
-% the floats of the given class to a temporary file, to be 
-% read back later (deferred floats),
-% given that \cmd\floats@sw\ is false.
-% Note that, to protect against the Boolean being undefined
-% at this late hour, we default it globally to true.
-%    \begin{macrocode}
-\def\do@if@floats#1#2{%
- \floats@sw{}{%
-%    \end{macrocode}
-% Open the stream to save out the document's floats of this class.
-%    \begin{macrocode}
-  \expandafter\newwrite
-              \csname#1write\endcsname
-  \expandafter\def
-              \csname#1@stream\endcsname{\jobname#2}%
-  \expandafter\immediate
-  \expandafter\openout
-              \csname#1write\endcsname
-              \csname#1@stream\endcsname\relax
-%    \end{macrocode}
-% Swap environments.
-% If the class writer has defined, e.g., \env{figure@write},
-% then we use this as the procedure to execute for writing
-% the float out to the external stream.
-% Otherwise, the replacement of \cmd\@float\ by \cmd\write@float\
-% should do the right thing for float environments defined
-% in the simple way of \classname{classes.dtx}.
-%    \begin{macrocode}
-  \@ifxundefined\@float@LaTeX{%
-   \let\@float@LaTeX\@float
-   \let\@dblfloat@LaTeX\@dblfloat
-   \let\@float\write@float
-   \let\@dblfloat\write@floats
-  }{}%
-  \let@environment{#1@float}{#1}%
-  \let@environment{#1@floats}{#1*}%
-  \@ifxundefined@cs{#1@write}{}{%
-   \let@environment{#1}{#1@write}%
-  }%
- }%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\print@float}
-% The procedure \cmd\print@float\ prints out the
-% deferred floats.
-% \changes{4.0b}{1999/06/20}{only execute if there really were floats of the given type}
-% \changes{4.0c}{1999/11/13}{*-form mandates pagebreak at each float; only print section head if there is something there.}
-% \changes{4.0d}{2000/05/23}{Allow things to break over pages by setting array@default.}
-% \changes{4.1b}{2008/08/12}{If class option \classoption{lengthcheck} is in effect, log the height of this float class.}
-%
-% Here, we make use of the \cmd\floats@sw\ Boolean to select
-% the non-floating type of processing.
-%    \begin{macrocode}
-\def\triggerpar{\leavevmode\@@par}%
-\def\oneapage{\def\begin@float@pagebreak{\newpage}\def\end@float@pagebreak{\newpage}}%
-\def\print@float#1#2{%
- \lengthcheck@sw{%
-  \total@float{#1}%
- }{}%
- \@ifxundefined@cs{#1write}{}{%
-  \begingroup
-   \@booleanfalse\floats@sw
-   #2%
-   \raggedbottom
-   \def\array@default{v}% floats must 
-   \let\@float\@float@LaTeX
-   \let\@dblfloat\@dblfloat@LaTeX
-   \let\trigger@float@par\triggerpar
-   \let@environment{#1}{#1@float}%
-   \let@environment{#1*}{#1@floats}%
-   \expandafter\prepdef\csname#1\endcsname{\trigger@float@par}%
-   \expandafter\prepdef\csname#1*\endcsname{\trigger@float@par}%
-   \@namedef{fps@#1}{h!}%
-   \expandafter\immediate
-   \expandafter\closeout
-               \csname#1write\endcsname
-   \everypar{%
-    \global\let\trigger@float@par\relax
-    \global\everypar{}\setbox\z@\lastbox
-    \@ifxundefined@cs{#1sname}{}{%
-     \begin@float@pagebreak
-     \expandafter\section
-     \expandafter*%
-     \expandafter{%
-                  \csname#1sname\endcsname
-                 }%
-    }%
-   }%
-   \input{\csname#1@stream\endcsname}%
-  \endgroup
-  \global\expandafter\let\csname#1write\endcsname\relax
- }%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\tally@float}
-% \begin{macro}{\total@float}
-% \changes{4.1b}{2008/08/12}{Tally and log the height of a float class}
-% If we are tallying column inches, \cmd\tally@float\ tallies a contribution to \cmd\ftype@\ \cmd\@captype,
-% depending upon the width of \cmd\@currbox.
-% In effect, each float class is tallied in two sections, one for narrow, one for wide floats.
-% 
-% If statistics are wanted, \cmd\total@float\ logs the tally for the given float class.
-% \changes{4.1f}{2009/07/10}{(AO, 518) Tally register overflow when locument is long}
-% The quantity \cmd\@twopowerfourteen\ is $2^{14}$, \cmd\@twopowertwo\ is $2^{2}$.
-%    \begin{macrocode}
-\chardef\@xvi=16\relax
-\mathchardef\@twopowerfourteen="4000
-\mathchardef\@twopowertwo="4
-\def\tally@float#1{%
- \begingroup
-%    \end{macrocode}
-% We strip all but the least significant 5 bits from \cmd\count\ \cmd\@currbox,
-% and put them into \cmd\@tempcnta. We then subtract 16 from \cmd\count\ \cmd\@currbox
-% (unless this would make it negative), effectively reversing the process
-% carried out in \cmd\@float.
-%    \begin{macrocode}
-  \@tempcnta\count\@currbox
-  \divide\@tempcnta\@xxxii
-  \multiply\@tempcnta\@xxxii
-  \advance\count\@currbox-\@tempcnta
-  \divide\@tempcnta\@xxxii
-  \@ifnum{\count\@currbox>\@xvi}{%
-   \advance\count\@currbox-\@xvi\@booleantrue\@temp@sw
-  }{%
-   \@booleanfalse\@temp@sw
-  }%
-%    \end{macrocode}
-% If so desired, we log the characteristics of this float object:
-% float class and float placement parameters, height, depth, and width.
-%    \begin{macrocode}
-  \show@box@size@sw{%
-   \class@info{Float #1
-    (\the\@tempcnta)[\@temp@sw{16+}{}\the\count\@currbox]^^J%
-    (\the\ht\@currbox+\the\dp\@currbox)X\the\wd\@currbox
-   }%
-  }{}%
- \endgroup
-%    \end{macrocode}
-% Here we tally the height of this float object.
-%    \begin{macrocode}
- \expandafter\let
- \expandafter\@tempa
-             \csname fbox@\csname ftype@#1\endcsname\endcsname
- \@ifnotrelax\@tempa{%
-  \@ifhbox\@tempa{%
-   \setbox\@tempboxa\vbox{\unvcopy\@currbox\hrule}%
-   \dimen@\ht\@tempboxa
-   \divide\dimen@\@twopowerfourteen
-   \@ifdim{\wd\@tempboxa<\textwidth}{%
-    \advance\dimen@\ht\@tempa
-    \global\ht\@tempa\dimen@
-   }{%
-    \advance\dimen@\dp\@tempa
-    \global\dp\@tempa\dimen@
-   }%
-  }{}%
- }{}%
-}%
-\def\total@float#1{%
- \expandafter\let
- \expandafter\@tempa
-             \csname fbox@\csname ftype@#1\endcsname\endcsname
- \@ifnotrelax\@tempa{%
-  \@ifhbox\@tempa{%
-   \@tempdima\the\ht\@tempa\divide\@tempdima\@twopowertwo\@tempcnta\@tempdima
-   \@tempdimb\the\dp\@tempa\divide\@tempdimb\@twopowertwo\@tempcntb\@tempdimb
-   \class@info{Total #1: Column(\the\@tempcnta pt), Page(\the\@tempcnta pt)}%
-  }{}%
- }{}%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\write@float}
-% \begin{macro}{\write@floats}
-% \begin{macro}{\write@@float}
-% Handles the case where the name of the float is the same as
-% that of the stream. Note that
-% \env{longtable} does \emph{not} fit this case.
-% Note also: \cmd\write@float\ is \emph{not} a user-level environment,
-% therefore it is properly not defined with \cmd\newenvironment.
-%    \begin{macrocode}
-\def\write@float#1{\write@@float{#1}{#1}}%
-\def\endwrite@float{\@Esphack}%
-\def\write@floats#1{\write@@float{#1*}{#1}}%
-\def\endwrite@floats{\@Esphack}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\write@@float}
-% \changes{4.0b}{1999/06/20}{AO: Fixed spurious \texttt{CR} and (return) characters in output file. Also, if the document did not have the \cs{end}\texttt{figure} on a line of its own, the macro wouldn't work. Fixed.}
-%    \begin{macrocode}
-\def\write@@float#1#2{%
-  \ifhmode
-     \@bsphack
-  \fi
-  \chardef\@tempc\csname#2write\endcsname
-  \toks@{\begin{#1}}%
-  \def\@tempb{#1}%
-  \expandafter\let\csname end#1\endcsname\endwrite@float
-  \catcode`\^^M\active
-  \@makeother\{\@makeother\}\@makeother\%
-  \write@floatline
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\write@floatline}
-% \begin{macro}{\@write@floatline}
-% \begin{macro}{\float@end@tag}
-% The procedure \cmd\write@floatline\ only parses; 
-% it passes its result to \cmd\@write@floatline, which
-% writes the line to output, then tests the line
-% for the \cmd\end\arg{float} tokens with 
-% aid of the \cmd\float@end@tag\ procedure.
-%    \begin{macrocode}
-\begingroup
- \catcode`\[\the\catcode`\{\catcode`\]\the\catcode`\}\@makeother\{\@makeother\}%
- \gdef\float@end@tag#1\end{#2}#3\@nul[%
-  \def\@tempa[#2]%
-  \@ifx[\@tempa\@tempb][\end[#2]][\write@floatline]%
- ]%
- \obeylines%
- \gdef\write@floatline#1^^M[%
-  \begingroup%
-   \newlinechar`\^^M%
-   \toks@\expandafter[\the\toks@#1]\immediate\write\@tempc[\the\toks@]%
-  \endgroup%
-  \toks@[]%
-  \float@end@tag#1\end{}\@nul%
- ]%
-\endgroup
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-%
-%
-% \subsection{Counters}
-% The following definitions override those of the \LaTeX\ kernel,
-% providing for a greater range of inputs.
-%    \begin{macrocode}
-\def\@alph#1{\ifcase#1\or a\or b\or c\or d\else\@ialph{#1}\fi}
-%    \end{macrocode}
-%
-%    \begin{macrocode}
-\def\@ialph#1{\ifcase#1\or \or \or \or \or e\or f\or g\or h\or i\or j\or
-  k\or l\or m\or n\or o\or p\or q\or r\or s\or t\or u\or v\or w\or x\or
-  y\or z\or aa\or bb\or cc\or dd\or ee\or ff\or gg\or hh\or ii\or jj\or
-  kk\or ll\or mm\or nn\or oo\or pp\or qq\or rr\or ss\or tt\or uu\or
-  vv\or ww\or xx\or yy\or zz\else\@ctrerr\fi}
-%    \end{macrocode}
-%
-%
-% \subsection{Customization of Sections}%
-%
-% Patch the standard \LaTeX\ sectioning procedure to:
-%\begin{itemize}
-%\item
-% Allow a sectioning command to trigger the title page, or more generally
-% to recognize that it is the first object in the document,
-% so we headpatch \cmd\@startsection.
-%
-%\item
-% Allow a tail command in |#6| to uppercase the title, so we retain
-% DPC's braces.
-%
-%\item
-% Allow each type of sectioning command to format its number differently,
-% so we generalize \cmd\@seccntformat.
-%
-%\item
-% Allow each type of sectioning command to format its argument differently,
-% so we generalize \cmd\@hangfrom.
-%
-%\item
-% Allow the starred form of the command to
-% mark (the running head) and
-% make an entry in the TOC,
-% so we put \cmd\@ssect\ on the same footing as \cmd\@sect.
-%
-% Note that the tokens passed to the TOC now are \emph{not}
-% the optional argument of the command, but the required.
-% This means that the user can no longer use the former
-% to put variant content in to the TOC as the Manual says.
-%
-% Instead, the optional argument is used to put an alternative
-% title into the running headers, a better choice.
-%
-%\end{itemize}
-%
-% \begin{macro}{\@startsection}
-% Patch a head hook into the basic sectioning command.
-% Treat \cmd\@sect\ and \cmd\@ssect\ on an equal footing:
-% now their pattern parts are identical.
-%    \begin{macrocode}
-\def\@startsection#1#2#3#4#5#6{%
- \@startsection@hook
- \if@noskipsec \leavevmode \fi
- \par
- \@tempskipa #4\relax
- \@afterindenttrue
- \ifdim \@tempskipa <\z@
-  \@tempskipa -\@tempskipa \@afterindentfalse
- \fi
- \if@nobreak
-  \everypar{}%
- \else
-  \addpenalty\@secpenalty\addvspace\@tempskipa
- \fi
- \@ifstar
-  {\@dblarg{\@ssect@ltx{#1}{#2}{#3}{#4}{#5}{#6}}}%
-  {\@dblarg{\@sect@ltx {#1}{#2}{#3}{#4}{#5}{#6}}}%
-}%
-\def\@startsection@hook{}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@sect}
-% When defining \cmd\@svsec, do not expand \cmd\@seccntformat.
-% Put brace characters back where they were before David Carlisle got at them
-% (i.e., as if \cmd\@hangfrom\ had two arguments).
-% Protect the mark mechanism from an undefined meaning.
-% Pass |#8| to the TOC instead of |#7|.
-% Remove \cmd\relax\ from the replacement part of \cmd\@svsec.
-%
-% The procedure \cmd\@hangfrom\ and \cmd\@runin@to\ can
-% be used to process the argument of the head.
-% The head can define, e.g., \cmd\@hangfrom@section, to
-% do its own processing.
-%
-% In using \cmd\H@refstepcounter\ in place of \cmd\refstepcounter\ we rely on
-% either loading before any package that patches the latter, or 
-% the convention that the former is the original \LaTeX\ procedure.
-%
-%    \begin{macrocode}
-\class@info{Repairing broken LateX \string\@sect}%
-\def\@sect@ltx#1#2#3#4#5#6[#7]#8{%
-  \@ifnum{#2>\c@secnumdepth}{%
-    \def\H@svsec{\phantomsection}%
-    \let\@svsec\@empty
-  }{%
-    \H@refstepcounter{#1}%
-    \def\H@svsec{%
-     \phantomsection
-    }%
-    \protected@edef\@svsec{{#1}}%
-    \@ifundefined{@#1cntformat}{%
-     \prepdef\@svsec\@seccntformat
-    }{%
-     \expandafter\prepdef
-     \expandafter\@svsec
-                 \csname @#1cntformat\endcsname
-    }%
-  }%
-  \@tempskipa #5\relax
-  \@ifdim{\@tempskipa>\z@}{%
-    \begingroup
-      \interlinepenalty \@M
-      #6{%
-       \@ifundefined{@hangfrom@#1}{\@hang@from}{\csname @hangfrom@#1\endcsname}%
-       {\hskip#3\relax\H@svsec}{\@svsec}{#8}%
-      }%
-      \@@par
-    \endgroup
-    \@ifundefined{#1mark}{\@gobble}{\csname #1mark\endcsname}{#7}%
-    \addcontentsline{toc}{#1}{%
-      \@ifnum{#2>\c@secnumdepth}{%
-       \protect\numberline{}%
-      }{%
-       \protect\numberline{\csname the#1\endcsname}%
-      }%
-      #8}%
-  }{%
-    \def\@svsechd{%
-      #6{%
-       \@ifundefined{@runin@to@#1}{\@runin@to}{\csname @runin@to@#1\endcsname}%
-       {\hskip#3\relax\H@svsec}{\@svsec}{#8}%
-      }%
-      \@ifundefined{#1mark}{\@gobble}{\csname #1mark\endcsname}{#7}%
-      \addcontentsline{toc}{#1}{%
-        \@ifnum{#2>\c@secnumdepth}{%
-         \protect\numberline{}%
-        }{%
-         \protect\numberline{\csname the#1\endcsname}%
-        }%
-        #8}%
-    }%
-  }%
-  \@xsect{#5}%
-}%
-\def\@hang@from#1#2#3{\@hangfrom{#1#2}#3}%
-\def\@runin@to #1#2#3{#1#2#3}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@ssect}
-% Put brace characters back where they were before David Carlisle got at them
-% (as if \cmd\@hangfrom\ has two arguments).
-% Possibly set a mark.
-% Make a TOC entry.
-%
-% Note that, for compatibility with the \classname{hyperref} package, we
-% need to provide the interface required by that package
-% (actually required by \file{pdfmark.def} and \file{nameref.sty}),
-% namely
-% the definition of \cmd\@currentlabelname\ (but now removed),
-% the insertion of the procedure \cmd\Sectionformat\ (but why is this needed?), and
-% the call to \cmd\phantomsection\ (which must precede the call to \cmd\addcontentsline).
-% We also have to sidestep the patch to \cmd\@ssect\ in that same file, therefore
-% we use a different control sequence name in the call from \cmd\@startsection.
-% \changes{4.0c}{1999/11/13}{(AO, 116) Hyperref compatibility}
-% \changes{4.0f}{2001/07/13}{(AO, 404) Hyperref compatibility}
-%    \begin{macrocode}
-\def\@ssect@ltx#1#2#3#4#5#6[#7]#8{%
-%    \end{macrocode}
-% Removed |\def\@currentlabelname{#8}|
-%    \begin{macrocode}
-  \def\H@svsec{\phantomsection}%
-  \@tempskipa #5\relax
-  \@ifdim{\@tempskipa>\z@}{%
-    \begingroup
-      \interlinepenalty \@M
-      #6{%
-       \@ifundefined{@hangfroms@#1}{\@hang@froms}{\csname @hangfroms@#1\endcsname}%
-%    \end{macrocode}
-% Removed |{\hskip#3\relax\H@svsec}{\Sectionformat{#8}{#1}}|
-%    \begin{macrocode}
-       {\hskip#3\relax\H@svsec}{#8}%
-      }%
-      \@@par
-    \endgroup
-    \@ifundefined{#1smark}{\@gobble}{\csname #1smark\endcsname}{#7}%
-    \addcontentsline{toc}{#1}{\protect\numberline{}#8}%
-  }{%
-    \def\@svsechd{%
-      #6{%
-       \@ifundefined{@runin@tos@#1}{\@runin@tos}{\csname @runin@tos@#1\endcsname}%
-%    \end{macrocode}
-% Removed |{\hskip#3\relax\H@svsec}{\Sectionformat{#8}{#1}}|
-%    \begin{macrocode}
-       {\hskip#3\relax\H@svsec}{#8}%
-      }%
-      \@ifundefined{#1smark}{\@gobble}{\csname #1smark\endcsname}{#7}%
-      \addcontentsline{toc}{#1}{\protect\numberline{}#8}%
-    }%
-  }%
-  \@xsect{#5}%
-}%
-\def\@hang@froms#1#2{#1#2}%
-\def\@runin@tos #1#2{#1#2}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\init@hyperref}
-% \changes{4.1b}{2008/08/12}{Acquire \classname{hyperref} savoire}
-% Document classes that incorporate this package will be \classname{hyperref}-savvy.
-% (To accomplish this, we ensure that \cmd\hyperanchor\ and \cmd\hyper@last\ are both defined.)
-% Being \classname{hyperref}-savvy levels some requirements on us, but the benefits are many.
-%
-% One is that the TOC will not get amnesia and require a full set of three typesetting runs before its formatting is stable.
-% Instead, only two runs are required: the first updates the auxiliary file, the second the TOC.
-% However, the formatting of the document does not change.
-%
-% Another aspect of being \classname{hyperref}-savvy is that the syntax of commands in the \file{.aux} file will not change
-% if \classname{hyperref} is turned on or off. 
-%
-% Note that \cmd\hyper@anchorstart\ and \cmd\hyper@anchorend\ constitute the programming interface
-% for a hypertext anchor (the target of a hypertext link); \cmd\hyper@linkstart\ and \cmd\hyper@linkend\
-% are the interface for a hypertext link.
-%    \begin{macrocode}
-\def\init@hyperref{%
- \providecommand\phantomsection{}%
- \providecommand\hyper@makecurrent[1]{}%
- \providecommand\Hy@raisedlink[1]{}%
- \providecommand\hyper@anchorstart[1]{}%
- \providecommand\hyper@anchorend{}%
- \providecommand\hyper@linkstart[2]{}%
- \providecommand\hyper@linkend{}%
- \providecommand\@currentHref{}%
-}%
-\let\H@refstepcounter\refstepcounter
-\appdef\document@inithook{%
- \init@hyperref
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\sec@upcase}
-% Upper case for sections (optional upper case items).  These are
-% created so that some headings can be toggled between mixed case and
-% upper case readily.
-% Headings that might be changed can be wrapped in the style file in
-% \cmd\sec@upcase\arg{text} constructs;
-% the expansion of \cmd\sec@upcase\ is
-% controlled here.  It is \cmd\relax\ by default (mixed case heads), and
-% can easily be changed to \cmd\uppercase\ if desired.
-% If mixed-case headings are wanted by the editor, authors {\em must}
-% supply mixed case text, although this is what authors should be doing
-% anyway.
-% (Mixed can be converted to upper,
-% but the reverse transformation cannot be automated.)
-%
-% The following setting gives the \LaTeX\ default.
-%    \begin{macrocode}
-\def\sec@upcase#1{\relax{#1}}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Patch the \env{tabular} and \env{array} Environments}
-%
-% \begin{macro}{\endtabular}
-% \begin{macro}{\endarray}
-% \changes{4.1b}{2008/08/12}{Patch the array package even later: after all package patches go in.}
-% We headpatch the begin processing and tailpatch the end processing
-% of the \env{tabular} and \env{array} environments.
-% A document class can define these hooks as needed.
-%
-% We proceed with care to make further patches to 
-% support tabulars that break over pages.
-% Our patches will not necessarily be effective for 
-% other packages that replace the \LaTeX\ \env{array} and \env{tabular}
-% environments. I know of none that do so.
-%    \begin{macrocode}
-\appdef\document@inithook{%
- \@ifpackageloaded{array}{\switch@array}{\switch@tabular}%
- \prepdef\endtabular{\endtabular@hook}%
- \@provide\endtabular@hook{}%
- \prepdef\endarray{\endarray@hook}%
- \@provide\endarray@hook{}%
- \providecommand\array@hook{}%
-%    \end{macrocode}
-% Install, effectively, a head patch to \cmd\tabular.
-% In order to avoid interference from, e.g., the \classname{array} package,
-% we must perform this patch only \emph{after} packages load.
-% \changes{4.0c}{1999/11/13}{(AO, 130) Interference from array package}
-%    \begin{macrocode}
- \prepdef\@tabular{\tabular@hook}%
- \@provide\tabular@hook{}%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\switch@tabular}
-% \begin{macro}{\switch@array}
-% The two procedures \cmd\switch@tabular\ and \cmd\switch@array\ 
-% apply needed patches to the various tabular procedures,
-% the former applying to the \LaTeX\ kernel, the latter to the 
-% required \classname{array} package (and to the number of other
-% required packages that load it).
-%
-%    \begin{macrocode}
-\def\switch@tabular{%
- \let\@array@sw\@array@sw@array
- \@ifx{\@array\@array@LaTeX}{%
-  \@ifx{\multicolumn\multicolumn@LaTeX}{%
-   \@ifx{\@tabular\@tabular@LaTeX}{%
-    \@ifx{\@tabarray\@tabarray@LaTeX}{%
-     \@ifx{\array\array@LaTeX}{%
-      \@ifx{\endarray\endarray@LaTeX}{%
-       \@ifx{\endtabular\endtabular@LaTeX}{%
-        \@ifx{\@mkpream\@mkpream@LaTeX}{%
-         \@ifx{\@addamp\@addamp@LaTeX}{%
-          \@ifx{\@arrayacol\@arrayacol@LaTeX}{%
-           \@ifx{\@tabacol\@tabacol@LaTeX}{%
-            \@ifx{\@arrayclassz\@arrayclassz@LaTeX}{%
-             \@ifx{\@tabclassiv\@tabclassiv@LaTeX}{%
-              \@ifx{\@arrayclassiv\@arrayclassiv@LaTeX}{%
-               \@ifx{\@tabclassz\@tabclassz@LaTeX}{%
-                \@ifx{\@classv\@classv@LaTeX}{%
-                 \@ifx{\hline\hline@LaTeX}{%
-                  \@ifx{\@tabularcr\@tabularcr@LaTeX}{%
-                   \@ifx{\@xtabularcr\@xtabularcr@LaTeX}{%
-                    \@ifx{\@xargarraycr\@xargarraycr@LaTeX}{%
-                     \@ifx{\@yargarraycr\@yargarraycr@LaTeX}{%
-                      \true@sw
-                     }{%
-                      \false@sw
-                     }%
-                    }{%
-                     \false@sw
-                    }%
-                   }{%
-                    \false@sw
-                   }%
-                  }{%
-                   \false@sw
-                  }%
-                 }{%
-                  \false@sw
-                 }%
-                }{%
-                 \false@sw
-                }%
-               }{%
-                \false@sw
-               }%
-              }{%
-               \false@sw
-              }%
-             }{%
-              \false@sw
-             }%
-            }{%
-             \false@sw
-            }%
-           }{%
-            \false@sw
-           }%
-          }{%
-           \false@sw
-          }%
-         }{%
-          \false@sw
-         }%
-        }{%
-         \false@sw
-        }%
-       }{%
-        \false@sw
-       }%
-      }{%
-       \false@sw
-      }%
-     }{%
-      \false@sw
-     }%
-    }{%
-     \false@sw
-    }%
-   }{%
-    \false@sw
-   }%
-  }{%
-   \false@sw
-  }%
- }{%
-  \false@sw
- }%
- {%
-  \class@info{Patching LaTeX tabular.}%
- }{%
-  \class@info{Unrecognized LaTeX tabular. Please update this document class! (Proceeding with fingers crossed.)}%
- }%
- \let\@array\@array@ltx
- \let\multicolumn\multicolumn@ltx
- \let\@tabular\@tabular@ltx
- \let\@tabarray\@tabarray@ltx
- \let\array\array@ltx
- \let\endarray\endarray@ltx
- \let\endtabular\endtabular@ltx
- \let\@mkpream\@mkpream@ltx
- \let\@addamp\@addamp@ltx
- \let\@arrayacol\@arrayacol@ltx
- \let\@tabacol\@tabacol@ltx
- \let\@arrayclassz\@arrayclassz@ltx
- \let\@tabclassiv\@tabclassiv@ltx
- \let\@arrayclassiv\@arrayclassiv@ltx
- \let\@tabclassz\@tabclassz@ltx
- \let\@classv\@classv@ltx
- \let\hline\hline@ltx
- \let\@tabularcr\@tabularcr@ltx
- \let\@xtabularcr\@xtabularcr@ltx
- \let\@xargarraycr\@xargarraycr@ltx
- \let\@yargarraycr\@yargarraycr@ltx
-}%
-%    \end{macrocode}
-% \changes{4.1b}{2008/08/12}{(AO, 505) Try to accommodate \classname{colortbl}.}
-%    \begin{macrocode}
-\def\switch@array{%
- \@ifpackageloaded{colortbl}{\let\switch@array@info\colortbl@message}{\let\switch@array@info\array@message}%
- \let\@array@sw\@array@sw@LaTeX
- \@ifx{\@array\@array@array}{%
-  \@ifx{\@tabular\@tabular@array}{%
-   \@ifx{\@tabarray\@tabarray@array}{%
-    \@ifx{\array\array@array}{%
-     \@ifx{\endarray\endarray@array}{%
-      \@ifx{\endtabular\endtabular@array}{%
-       \@ifx{\@mkpream\@mkpream@array}{%
-        \@ifx{\@classx\@classx@array}{%
-         \@ifx{\insert@column\insert@column@array}{%
-          \@ifx{\@arraycr\@arraycr@array}{%
-           \@ifx{\@xarraycr\@xarraycr@array}{%
-            \@ifx{\@xargarraycr\@xargarraycr@array}{%
-             \@ifx{\@yargarraycr\@yargarraycr@array}{%
-              \true@sw
-             }{%
-              \false@sw
-             }%
-            }{%
-             \false@sw
-            }%
-           }{%
-            \false@sw
-           }%
-          }{%
-           \false@sw
-          }%
-         }{%
-          \false@sw
-         }%
-        }{%
-         \false@sw
-        }%
-       }{%
-        \false@sw
-       }%
-      }{%
-       \false@sw
-      }%
-     }{%
-      \false@sw
-     }%
-    }{%
-     \false@sw
-    }%
-   }{%
-    \false@sw
-   }%
-  }{%
-   \false@sw
-  }%
- }{%
-  \false@sw
- }{%
-  \class@info{Patching array package.}%
- }{%
-  \switch@array@info
- }%
- \let\@array    \@array@array@new
- \let\@@array   \@array % Cosi fan tutti
- \let\@tabular  \@tabular@array@new
- \let\@tabarray \@tabarray@array@new
- \let\array     \array@array@new
- \let\endarray  \endarray@array@new
- \let\endtabular\endtabular@array@new
- \let\@mkpream  \@mkpream@array@new
- \let\@classx   \@classx@array@new
- \let\@arrayacol\@arrayacol@ltx
- \let\@tabacol  \@tabacol@ltx
- \let\insert@column\insert@column@array@new
- \expandafter\let\csname endtabular*\endcsname\endtabular % Cosi fan tutti
- \let\@arraycr  \@arraycr@new
- \let\@xarraycr \@xarraycr@new
- \let\@xargarraycr\@xargarraycr@new
- \let\@yargarraycr\@yargarraycr@new
-}%
-\def\array@message{%
- \class@info{Unrecognized array package. Please update this document class! (Proceeding with fingers crossed.)}%
-}%
-\def\colortbl@message{%
- \class@info{colortbl package is loaded. (Proceeding with fingers crossed.)}%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@array@sw}
-% The Boolean \cmd\@array@sw\ must be different depending on
-% whether the \classname{array} package is loaded.
-%    \begin{macrocode}
-\def\@array@sw@LaTeX{\@ifx{\\\@tabularcr}}%
-\def\@array@sw@array{\@ifx{\d@llarbegin\begingroup}}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabular}
-% \changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-% We provide the old versions of \cmd\@tabular\ along with the respective new versions.
-% The change here is to avoid committing to LR mode. That will be done later (as late as possible, naturally).
-%
-% Compatibility note: I had done \cmd\let\ \cmd\col@sep\ \cmd\@undefined\  here, but
-% this was not compatible with \classname{colortbl}. I have removed that statement.
-%    \begin{macrocode}
-\def\@tabular@LaTeX{%
- \leavevmode
- \hbox\bgroup$%
-  \let\@acol\@tabacol
-  \let\@classz\@tabclassz
-  \let\@classiv\@tabclassiv
-  \let\\\@tabularcr
-  \@tabarray
-}%
-\def\@tabular@ltx{%
-  \let\@acoll\@tabacoll
-  \let\@acolr\@tabacolr
-  \let\@acol\@tabacol
-  \let\@classz\@tabclassz
-  \let\@classiv\@tabclassiv
-  \let\\\@tabularcr
-  \@tabarray
-}%
-\def\@tabular@array{%
- \leavevmode
- \hbox\bgroup$%
-  \col@sep\tabcolsep
-  \let\d@llarbegin\begingroup
-  \let\d@llarend\endgroup
-  \@tabarray
-}%
-\def\@tabular@array@new{%
-  \let\@acoll\@tabacoll
-  \let\@acolr\@tabacolr
-  \let\@acol\@tabacol
-%    \end{macrocode}
-% \let\col@sep\@undefined
-%    \begin{macrocode}
-  \let\d@llarbegin\begingroup
-  \let\d@llarend\endgroup
-  \@tabarray
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabarray}
-% Here we provide old and new versions of the \cmd\@tabarray\ procedure.
-% The change here is to parametrize the default vertical alignment,
-% which is 'c' in standard \LaTeX.
-% Under some circumstances, we want to change this to, say, 'v'.
-%
-% \changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-% FIXME: must decouple \env{array} and \env{tabular}. Done (it seems).
-%
-% Note on \classname{colortbl}: this package head-patches \cmd\@tabarray
-% with its own command \cmd\CT@start, and tails onto \cmd\endarray\ with \cmd\CT@end.
-% It fortuitously does the former at \cmd\AtBeginDocument\ time, and, fortuitously, 
-% we do not patch \cmd\endarray, which it overwrites.
-%    \begin{macrocode}
-\def\@tabarray@LaTeX{%
- \m@th\@ifnextchar[\@array{\@array[c]}%
-}%
-\def\@tabarray@ltx{%
- \m@th\@ifnextchar[\@array{\expandafter\@array\expandafter[\array@default]}%
-}%
-\def\@tabarray@array{%
- \@ifnextchar[{\@@array}{\@@array[c]}%
-}%
-\def\@tabarray@array@new{%
- \@ifnextchar[{\@@array}{\expandafter\@@array\expandafter[\array@default]}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabularcr}
-% \begin{macro}{\@tbpen}
-% \begin{macro}{\@tabularcr}
-% \begin{macro}{\@xtabularcr}
-% \begin{macro}{\@xargarraycr}
-% \begin{macro}{\@yargarraycr}
-% \begin{macro}{\@arraycr}
-% \begin{macro}{\@xarraycr}
-% We provide for the \cmd\\ command within \env{tabular} to provide control over page breaking, just the same as
-% that of \env{eqnarray}.
-%
-% The count register \cmd\intertabularlinepenalty\ is similar to \cmd\interdisplaylinepenalty: it is the penalty
-% associated with each row of a tabular. When it is set to \cmd\@M, the tabular will cleave together.
-%
-% The count register \cmd\@tbpen\ is similar to \cmd\@eqpen: it memorizes the penalty to use after the current tabular row.
-% If the \cmd\\ command is in its star form, then \cmd\@eqpen\ is set to \cmd\@M.
-%
-% We append code to \cmd\samepage\ so that a tabular within its scope will cleave together.
-%
-% We keep the standard definition of \cmd\@tabularcr\ in \cmd\@tabularcr@LaTeX\ for reference,
-% and provide a new definition that works like \cmd\@eqncr: it sets \cmd\@tbpen\ to \cmd\@M\ if the star was given.
-%
-% We also provide new versions of \cmd\@xtabularcr, \cmd\@xargarraycr, and \cmd\@yargarraycr, all of which invoke \cmd\@tbpen.
-%
-% The \cmd\switch@tabular\ procedure switches in the new definitions.
-%    \begin{macrocode}
-\newcount\intertabularlinepenalty
-\intertabularlinepenalty=100
-\newcount\@tbpen
-\appdef\samepage{\intertabularlinepenalty\@M}%
-\def\@tabularcr@LaTeX{{\ifnum 0=`}\fi \@ifstar \@xtabularcr \@xtabularcr}%
-\def\@tabularcr@ltx{{\ifnum 0=`}\fi \@ifstar {\global \@tbpen \@M \@xtabularcr }{\global \@tbpen \intertabularlinepenalty \@xtabularcr }}%
-\def\@xtabularcr@LaTeX{\@ifnextchar [\@argtabularcr {\ifnum 0=`{\fi }\cr }}%
-\def\@xtabularcr@ltx{\@ifnextchar [\@argtabularcr {\ifnum 0=`{\fi }\cr \noalign {\penalty \@tbpen }}}%
-\def\@xargarraycr@LaTeX#1{\@tempdima #1\advance \@tempdima \dp \@arstrutbox \vrule \@height \z@ \@depth \@tempdima \@width \z@ \cr}%
-\def\@xargarraycr@ltx#1{\@tempdima #1\advance \@tempdima \dp \@arstrutbox \vrule \@height \z@ \@depth \@tempdima \@width \z@ \cr \noalign {\penalty \@tbpen }}%
-\def\@yargarraycr@LaTeX#1{\cr \noalign {\vskip #1}}%
-\def\@yargarraycr@ltx#1{\cr \noalign {\penalty \@tbpen \vskip #1}}%
-%    \end{macrocode}
-%
-% If the \classname{array} package has been loaded, we must alter the meanings of 
-% \cmd\@arraycr, \cmd\@xarraycr, \cmd\@xargarraycr, and \cmd\@yargarraycr.
-% In this case, it is \cmd\switch@array\ that switches in the new definitions.
-%    \begin{macrocode}
-\def\@arraycr@array{%
- \relax
- \iffalse{\fi\ifnum 0=`}\fi
- \@ifstar \@xarraycr \@xarraycr
-}%
-\def\@arraycr@new{%
- \relax
- \iffalse{\fi\ifnum 0=`}\fi
- \@ifstar {\global \@tbpen \@M \@xarraycr }{\global \@tbpen \intertabularlinepenalty \@xarraycr }%
-}%
-\def\@xarraycr@array{%
- \@ifnextchar [%]
- \@argarraycr {\ifnum 0=`{}\fi\cr}%
-}%
-\def\@xarraycr@new{%
- \@ifnextchar [%]
- \@argarraycr {\ifnum 0=`{}\fi\cr \noalign {\penalty \@tbpen }}%
-}%
-\def\@xargarraycr@array#1{%
- \unskip
- \@tempdima #1\advance\@tempdima \dp\@arstrutbox
- \vrule \@depth\@tempdima \@width\z@
- \cr
-}%
-\def\@xargarraycr@new#1{%
- \unskip
- \@tempdima #1\advance\@tempdima \dp\@arstrutbox
- \vrule \@depth\@tempdima \@width\z@
- \cr
- \noalign {\penalty \@tbpen }%
-}%
-\def\@yargarraycr@array#1{%
- \cr
- \noalign{\vskip #1}%
-}%
-\def\@yargarraycr@new#1{%
- \cr
- \noalign{\penalty \@tbpen \vskip #1}%
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\array}
-% We provide old and new versions of the \cmd\array\ procedure for both \LaTeX\ and the \classname{array} package.
-% The change here is to accomodate the new procedures that will be called for the array boundaries, even
-% though at present they are not special.
-% A thought: here is where matrices can be readily accomodated.
-%    \begin{macrocode}
-\def\array@LaTeX{%
- \let\@acol\@arrayacol
- \let\@classz\@arrayclassz
- \let\@classiv\@arrayclassiv
- \let\\\@arraycr
- \let\@halignto\@empty
- \@tabarray
-}%
-\def\array@ltx{%
- \@ifmmode{}{\@badmath$}%
- \let\@acoll\@arrayacol
- \let\@acolr\@arrayacol
- \let\@acol\@arrayacol
- \let\@classz\@arrayclassz
- \let\@classiv\@arrayclassiv
- \let\\\@arraycr
- \let\@halignto\@empty
- \@tabarray
-}%
-\def\array@array{%
- \col@sep\arraycolsep
- \def\d@llarbegin{$}\let\d@llarend\d@llarbegin\gdef\@halignto{}%
- \@tabarray
-}
-\def\array@array@new{%
- \@ifmmode{}{\@badmath$}%
- \let\@acoll\@arrayacol
- \let\@acolr\@arrayacol
- \let\@acol\@arrayacol
-%    \end{macrocode}
-% \changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-% Removed: \verb+\let\col@sep\@undefined+
-%    \begin{macrocode}
- \def\d@llarbegin{$}%
- \let\d@llarend\d@llarbegin
- \gdef\@halignto{}%
- \@tabarray
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@array}
-% Here we provide old and new versions of \cmd\@array.
-% The change here is to provide a convenient, flexible, and extensible
-% mechanism for new vertical alignment options.
-%
-% Instead of testing the optional argument with \cmd\if, we
-% use a dispatcher based on \cmd\csname.
-%
-% We also refrain from using \cmd\ialign, which would set
-% the \cmd\tabskip\ to the wrong value.
-%
-% Finally, the procedure to set the \cmd\@arstrutbox\
-% is broken out so that it can be patched.
-%    \begin{macrocode}
-\def\@array@LaTeX[#1]#2{%
-  \if #1t\vtop \else \if#1b\vbox \else \vcenter \fi\fi
-  \bgroup
-  \setbox\@arstrutbox\hbox{%
-    \vrule \@height\arraystretch\ht\strutbox
-           \@depth\arraystretch \dp\strutbox
-           \@width\z@}%
-  \@mkpream{#2}%
-  \edef\@preamble{%
-    \ialign \noexpand\@halignto
-      \bgroup \@arstrut \@preamble \tabskip\z@skip \cr}%
-  \let\@startpbox\@@startpbox \let\@endpbox\@@endpbox
-  \let\tabularnewline\\%
-    \let\par\@empty
-    \let\@sharp##%
-    \set@typeset@protect
-    \lineskip\z@skip\baselineskip\z@skip
-    \ifhmode \@preamerr\z@ \@@par\fi
-    \@preamble
-}%
-\def\@array@ltx[#1]#2{%
- \@nameuse{@array@align@#1}%
-  \set@arstrutbox
-  \@mkpream{#2}%
-  \prepdef\@preamble{%
-    \tabskip\tabmid@skip
-    \@arstrut
-  }%
-  \appdef\@preamble{%
-    \tabskip\tabright@skip
-    \cr
-    \array@row@pre
-  }%
-% \let\@startpbox\@@startpbox
-% \let\@endpbox\@@endpbox
-  \let\tabularnewline\\%
-  \let\par\@empty
-  \let\@sharp##%
-  \set@typeset@protect
-  \lineskip\z@skip\baselineskip\z@skip
-  \tabskip\tableft@skip\relax
-  \ifhmode \@preamerr\z@ \@@par\fi
-  \everycr{}%
-  \expandafter\halign\expandafter\@halignto\expandafter\bgroup\@preamble
-}%
-%
-\def\set@arstrutbox{%
-  \setbox\@arstrutbox\hbox{%
-    \vrule \@height\arraystretch\ht\strutbox
-           \@depth\arraystretch \dp\strutbox
-           \@width\z@
-  }%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@array@array}
-% 
-%    \begin{macrocode}
-\def\@array@array[#1]#2{%
-  \@tempdima \ht \strutbox
-  \advance \@tempdima by\extrarowheight
-  \setbox \@arstrutbox \hbox{\vrule
-             \@height \arraystretch \@tempdima
-             \@depth \arraystretch \dp \strutbox
-             \@width \z@}%
-  \begingroup
-  \@mkpream{#2}%
-  \xdef\@preamble{\noexpand \ialign \@halignto
-                  \bgroup \@arstrut \@preamble
-                          \tabskip \z@ \cr}%
-  \endgroup
-  \@arrayleft
-  \if #1t\vtop \else \if#1b\vbox \else \vcenter \fi \fi
-  \bgroup
-  \let \@sharp ##\let \protect \relax
-  \lineskip \z@
-  \baselineskip \z@
-  \m@th
-  \let\\\@arraycr \let\tabularnewline\\\let\par\@empty \@preamble
-}%
-\def\@array@array@new[#1]#2{%
-  \@tempdima\ht\strutbox
-  \advance\@tempdima by\extrarowheight
-  \setbox\@arstrutbox\hbox{%
-   \vrule \@height\arraystretch\@tempdima
-          \@depth \arraystretch\dp\strutbox
-          \@width \z@
-  }%
-  \begingroup
-   \@mkpream{#2}%
-   \xdef\@preamble{\@preamble}%
-  \endgroup
-  \prepdef\@preamble{%
-   \tabskip\tabmid@skip
-    \@arstrut
-  }%
-  \appdef\@preamble{%
-   \tabskip\tabright@skip
-   \cr
-   \array@row@pre
-  }%
-  \@arrayleft
-  \@nameuse{@array@align@#1}%
-  \m@th
-  \let\\\@arraycr
-  \let\tabularnewline\\%
-  \let\par\@empty
-  \let\@sharp##%
-  \set@typeset@protect
-  \lineskip\z@\baselineskip\z@
-  \tabskip\tableft@skip
-  \everycr{}%
-  \expandafter\halign\expandafter\@halignto\expandafter\bgroup\@preamble
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\endarray}
-% Here we provide old and new versions of \cmd\endarray.
-% The change here is to use a single procedure to close
-% out any array-like structure, namely \cmd\endarray@ltx.
-% It merely closes out the \cmd\halign.
-%    \begin{macrocode}
-\def\endarray@LaTeX{%
- \crcr\egroup\egroup
-}%
-\def\endarray@ltx{%
- \crcr\array@row@pst\egroup\egroup
-}%
-\def\endarray@array{%
- \crcr \egroup \egroup \@arrayright \gdef\@preamble{}%
-}%
-\def\endarray@array@new{%
- \crcr\array@row@pst\egroup\egroup % Same as \endarray@ltx
- \@arrayright
- \global\let\@preamble\@empty
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\endtabular}
-% 
-%    \begin{macrocode}
-\def\endtabular@LaTeX{%
- \crcr\egroup\egroup $\egroup
-}%
-\def\endtabular@ltx{%
- \endarray
-}%
-\def\endtabular@array{%
- \endarray $\egroup
-}%
-\def\endtabular@array@new{%
- \endarray
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{endtabular*}
-% Here we provide a proper definition for the star-form of \enve{endtabular}.
-% It is one of the enduring curiosities that the \LaTeX\ kernel continues to use
-% dangerously and inappropriately ``optimized'' definitions for such commands.
-%    \begin{macrocode}
-\@namedef{endtabular*}{\endtabular}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\multicolumn}
-% 
-%    \begin{macrocode}
-\long\def\multicolumn@LaTeX#1#2#3{%
- \multispan{#1}\begingroup
-  \@mkpream{#2}%
-  \def\@sharp{#3}\set@typeset@protect
-  \let\@startpbox\@@startpbox\let\@endpbox\@@endpbox
-  \@arstrut \@preamble\hbox{}\endgroup\ignorespaces
-}%
-\long\def\multicolumn@ltx#1#2#3{%
- \multispan{#1}%
- \begingroup
-  \@mkpream{#2}%
-  \def\@sharp{#3}%
-  \set@typeset@protect
- %\let\@startpbox\@@startpbox\let\@endpbox\@@endpbox
-  \@arstrut
-  \@preamble
-  \hbox{}%
- \endgroup
- \ignorespaces
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@array@align@}
-% \begin{macro}{\array@default}
-% Here are the various procedures for the vertical alignment options.
-% The change from standard \LaTeX\ is that we do not go into math mode
-% in every case: only when required by \cmd\vcenter. 
-% Also, we use \cmd\aftergroup\ to close out the boxes and modes we have started.
-% It requires only that each procedure issue exactly one unmatched \cmd\bgroup.
-%
-% We establish here the default vertical alignment.
-%    \begin{macrocode}
-\def\@array@align@t{\leavevmode\vtop\bgroup}%
-\def\@array@align@b{\leavevmode\vbox\bgroup}%
-\def\@array@align@c{\leavevmode\@ifmmode{\vcenter\bgroup}{$\vcenter\bgroup\aftergroup$\aftergroup\relax}}%
-\def\@array@align@v{%
- \@ifmmode{%
-  \@badmath
-  \vcenter\bgroup
- }{%
-  \@ifinner{%
-   $\vcenter\bgroup\aftergroup$
-  }{%
-   \@@par\bgroup
-  }%
- }%
-}%
-\def\array@default{c}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\array@row@pre}
-% \begin{macro}{\array@row@pst}
-% \begin{macro}{\array@row@rst}
-% The procedure \cmd\array@row@rst\ reestablishes a default context for
-% an alignment, so that they can be nested.
-% Any environment or procedure that alters the way alignments are formatted
-% must patch this procedure to restore from that alteration.
-% To start things off, we equate \cmd\@array@align@v\ to \cmd\@array@align@c,
-% because it does not make sense to do the former in any context other 
-% than the MVL or in a list that will be unboxed onto the MVL.
-%    \begin{macrocode}
-\def\array@row@rst{%
- \let\@array@align@v\@array@align@c
-}%
-\def\array@row@pre{}%
-\def\array@row@pst{}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\toprule}
-% \begin{macro}{\colrule}
-% \begin{macro}{\botrule}
-% Default definitions for \cmd\toprule, \cmd\colrule, \cmd\botrule
-%    \begin{macrocode}
-\newcommand\toprule{\tab@rule{\column@font}{\column@fil}{\frstrut}}%
-\newcommand\colrule{\unskip\lrstrut\\\tab@rule{\body@font}{}{\frstrut}}%
-\newcommand\botrule{\unskip\lrstrut\\\noalign{\hline@rule}{}}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\hline}
-%    \begin{macrocode}
-\def\hline@LaTeX{%
- \noalign{\ifnum0=`}\fi\hrule \@height \arrayrulewidth \futurelet
-   \reserved@a\@xhline
-}%
-\def\hline@ltx{%
- \noalign{%
-  \ifnum0=`}\fi
-  \hline@rule
-  \futurelet\reserved@a\@xhline
- % \noalign ended in \@xhline
-}%
-\def\@xhline@unneeded{%
- \say\reserved@a
- \ifx\reserved@a\hline
-  \vskip\doublerulesep
-  \vskip-\arrayrulewidth
- \fi
- \ifnum0=`{\fi}%
-}%
-\def\tab@rule#1#2#3{%
- \crcr
- \noalign{%
-  \hline@rule
-  \gdef\@arstrut@hook{%
-   \global\let\@arstrut@hook\@empty
-   #3%
-  }%
-  \gdef\cell@font{#1}%
-  \gdef\cell@fil{#2}%
- }%
-}%
-\def\column@font{}%
-\def\column@fil{}%
-\def\body@font{}%
-\def\cell@font{}%
-\def\frstrut{}%
-\def\lrstrut{}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@arstrut@hline}
-% \begin{macro}{\@arstrut@org}
-% \begin{macro}{\@arstrut@hook}
-% \begin{macro}{\@arstrutbox@hline}
-% \begin{macro}{\set@arstrutbox}
-% \begin{macro}{\hline@rule}
-% The procedure \cmd\@arstrut@hline\ is substantially the same as
-% \cmd\@arstrut, except the strut copied in is \cmd\@arstrutbox@hline
-% instead of \cmd\@arstrutbox.
-%
-% The procedure \cmd\@arstrut@hook\ is redefined in \cmd\tab@rule!
-%
-% The register \cmd\@arstrutbox@hline.
-%
-% We append to \cmd\set@arstrutbox\ the code necessary to set a strut following an \cmd\hline.
-%
-% The procedure \cmd\hline@rule\ lays down a rule, and changes the meaning of \cmd\@arstrut\
-% so that the next line will be correctly strutted.
-%
-% The \cmd\@arstrut@hline@clnc\ is a klootch, a magic number.
-%    \begin{macrocode}
-\def\@arstrut@hline{%
- \relax
- \@ifmmode{\copy}{\unhcopy}\@arstrutbox@hline
- \@arstrut@hook
-}%
-%
-\let\@arstrut@org\@arstrut
-\def\@arstrut@hook{%
- \global\let\@arstrut\@arstrut@org
-}%
-%
-\newbox\@arstrutbox@hline
-\appdef\set@arstrutbox{%
-  \setbox\@arstrutbox@hline\hbox{%
-    \setbox\z@\hbox{$0^{0}_{}$}%
-    \dimen@\ht\z@\advance\dimen@\@arstrut@hline@clnc
-    \@ifdim{\dimen@<\arraystretch\ht\strutbox}{\dimen@=\arraystretch\ht\strutbox}{}%
-    \vrule \@height\dimen@
-           \@depth\arraystretch \dp\strutbox
-           \@width\z@
-  }%
-}%
-%
-\def\hline@rule{%
- \hrule \@height \arrayrulewidth
- \global\let\@arstrut\@arstrut@hline
-}%
-\def\@arstrut@hline@clnc{2\p@}% % Klootch: magic number
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\tableft@skip}
-%    \begin{macrocode}
-\def\tableft@skip{\z@skip}%
-\def\tabmid@skip{\z@skip}%\@flushglue
-\def\tabright@skip{\z@skip}%
-\def\tableftsep{\tabcolsep}%
-\def\tabmidsep{\tabcolsep}%
-\def\tabrightsep{\tabcolsep}%
-\def\cell@fil{}%
-\def\pbox@hook{}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@arstrut}
-%    \begin{macrocode}
-\appdef\@arstrut{\@arstrut@hook}%
-\let\@arstrut@hook\@empty
-\def\@addtopreamble{\appdef\@preamble}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@mkpream}
-%    \begin{macrocode}
-\def\@mkpream@LaTeX#1{%
-  \@firstamptrue\@lastchclass6
-  \let\@preamble\@empty
-  \let\protect\@unexpandable@protect
-  \let\@sharp\relax
-  \let\@startpbox\relax\let\@endpbox\relax
-  \@expast{#1}%
-  \expandafter\@tfor \expandafter
-    \@nextchar \expandafter:\expandafter=\reserved@a\do
-       {\@testpach\@nextchar
-    \ifcase \@chclass \@classz \or \@classi \or \@classii \or \@classiii
-      \or \@classiv \or\@classv \fi\@lastchclass\@chclass}%
-  \ifcase \@lastchclass \@acol
-      \or \or \@preamerr \@ne\or \@preamerr \tw@\or \or \@acol \fi
-}%
-\def\@mkpream@ltx#1{%
- \@firstamptrue
- \@lastchclass6
- \let\@preamble\@empty
- \let\protect\@unexpandable@protect
- \let\@sharp\relax
-%\let\@startpbox\relax\let\@endpbox\relax
- \@expast{#1}%
- \expandafter\@tfor\expandafter\@nextchar\expandafter:\expandafter=\reserved@a
- \do{%
-  \expandafter\@testpach\expandafter{\@nextchar}%
-  \ifcase\@chclass
-   \@classz
-  \or
-   \@classi
-  \or
-   \@classii
-  \or
-   \@classiii
-  \or
-   \@classiv
-  \or
-   \@classv
-  \fi
-  \@lastchclass\@chclass
- }%
- \ifcase\@lastchclass
-  \@acolr % right-hand column
- \or
- \or
-  \@preamerr\@ne
- \or
-  \@preamerr\tw@
- \or
- \or
-  \@acolr % right-hand column
- \fi
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\insert@column}
-%    \begin{macrocode}
-\def\insert@column@array{%
-   \the@toks \the \@tempcnta
-   \ignorespaces \@sharp \unskip
-   \the@toks \the \count@ \relax
-}%
-\def\insert@column@array@new{%
- \the@toks\the\@tempcnta
- \array@row@rst\cell@font
- \ignorespaces\@sharp\unskip
- \the@toks\the\count@
- \relax
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@mkpream@relax}
-% The procedure \cmd\@mkpream@relax\ participates in a strange and wonderful
-% method of binding the alignment procedure---but only certain parts thereof.
-%
-% Here is how it works: in \LaTeX, the \classname{array} package, and in the
-% \classname{longtable} package alike, there is a need to create an alignment
-% preamble (using \cmd\@mkpream) for use by the upcoming \cmd\halign.
-% Then, in both \classname{array} and \classname{longtable}, \TeX's \cmd\edef\
-% is used to `compile in place' that alignment preamble. 
-%
-% In the case of \classname{array}, 
-% the operation is done in order to pre-expand the use of \texttt{*}; 
-% in \classname{longtable}, it is to set the widths of the columns.
-%
-% Now, during this \cmd\edef, certain control sequence names must \emph{not}
-% be expanded, and those are robustified by \cmd\@mkpream@relax.
-%
-%    \begin{macrocode}
-\def\@mkpream@relax{%
- \let\tableftsep   \relax
- \let\tabmidsep    \relax
- \let\tabrightsep  \relax
- \let\array@row@rst\relax
- \let\cell@font    \relax
- \let\@startpbox   \relax
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@mkpream}
-% We insert \cmd\@mkpream@relax\ at the head of the procedure.
-% The robustifying of \cmd\@startpbox\ and \cmd\@endpbox\ is taken over by this mechanism.
-% We also invoke \cmd\@acolr\ instead of \cmd\@acol\ when a right-hand column is at hand.
-%
-% \changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-% Note on \classname{colortbl}: this package head-patches \cmd\@mkpream\ to robustify
-% a number of its commands during the construction of the alignment preamble.
-% The best we can do is to supplement the \cmd\@mkpream@relax\ procedure to perform this action.
-%    \begin{macrocode}
-\def\@mkpream@array#1{%
-   \gdef\@preamble{}\@lastchclass 4 \@firstamptrue
-   \let\@sharp\relax \let\@startpbox\relax \let\@endpbox\relax
-   \@temptokena{#1}\@tempswatrue
-   \@whilesw\if@tempswa\fi{\@tempswafalse\the\NC@list}%
-   \count@\m@ne
-   \let\the@toks\relax
-   \prepnext@tok
-   \expandafter \@tfor \expandafter \@nextchar
-    \expandafter :\expandafter =\the\@temptokena \do
-   {\@testpach
-   \ifcase \@chclass \@classz \or \@classi \or \@classii
-     \or \save@decl \or \or \@classv \or \@classvi
-     \or \@classvii \or \@classviii
-     \or \@classx
-     \or \@classx \fi
-   \@lastchclass\@chclass}%
-   \ifcase\@lastchclass
-   \@acol \or
-   \or
-   \@acol \or
-   \@preamerr \thr@@ \or
-   \@preamerr \tw@ \@addtopreamble\@sharp \or
-   \or
-   \else  \@preamerr \@ne \fi
-   \def\the@toks{\the\toks}%
-}%
-\def\@mkpream@array@new#1{%
- \gdef\@preamble{}%
- \@lastchclass\f@ur
- \@firstamptrue
- \let\@sharp\relax
- \@mkpream@relax
-%\let\@startpbox\relax\let\@endpbox\relax
- \@temptokena{#1}\@tempswatrue
- \@whilesw\if@tempswa\fi{\@tempswafalse\the\NC@list}%
- \count@\m@ne
- \let\the@toks\relax
- \prepnext@tok
- \expandafter\@tfor\expandafter\@nextchar\expandafter:\expandafter=\the\@temptokena
- \do{%
-  \@testpach
-  \ifcase\@chclass
-   \@classz
-  \or
-   \@classi
-  \or
-   \@classii
-  \or
-   \save@decl
-  \or
-  \or
-   \@classv
-  \or
-   \@classvi
-  \or
-   \@classvii
-  \or
-   \@classviii
-  \or
-   \@classx
-  \or
-   \@classx
-  \fi
-  \@lastchclass\@chclass
- }%
- \ifcase\@lastchclass
-  \@acolr % right-hand column
- \or
- \or
-  \@acolr % right-hand column
- \or
-  \@preamerr\thr@@
- \or
-  \@preamerr\tw@\@addtopreamble\@sharp
- \or
- \or
- \else
-  \@preamerr\@ne
- \fi
- \def\the@toks{\the\toks}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@mkpream@relax}
-% \changes{4.1b}{2008/08/12}{(AO, 505) try to accommodate \classname{colortbl}.}
-% David P. Carlisle's \classname{colortbl} package headpatches \cmd\@mkpream\ in place
-% during package loading, so it does not know whom it is working on.
-% Let us try to accomodate this package by doing what it would have liked to have done.
-%
-% Note: it would be far better to break out this mechanism in the \classname{array} package.
-%    \begin{macrocode}
-\appdef\@mkpream@relax{%
- \let\CT@setup       \relax
- \let\CT@color       \relax
- \let\CT@do@color    \relax
- \let\color          \relax
- \let\CT@column@color\relax
- \let\CT@row@color   \relax
- \let\CT@cell@color  \relax
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@addamp}
-%    \begin{macrocode}
-\def\@addamp@LaTeX{%
-  \if@firstamp\@firstampfalse\else\edef\@preamble{\@preamble &}\fi
-}%
-\def\@addamp@ltx{%
- \if@firstamp\@firstampfalse\else\@addtopreamble{&}\fi
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@arrayacol}
-%    \begin{macrocode}
-\def\@arrayacol@LaTeX{%
- \edef\@preamble{\@preamble \hskip \arraycolsep}%
-}%
-\def\@arrayacol@ltx{%
- \@addtopreamble{\hskip\arraycolsep}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabacol}
-%    \begin{macrocode}
-\def\@tabacoll{%
- \@addtopreamble{\hskip\tableftsep\relax}%
-}%
-\def\@tabacol@LaTeX{%
- \edef\@preamble{\@preamble \hskip \tabcolsep}%
-}%
-\def\@tabacol@ltx{%
- \@addtopreamble{\hskip\tabmidsep\relax}%
-}%
-\def\@tabacolr{%
- \@addtopreamble{\hskip\tabrightsep\relax}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@arrayclassz}
-%    \begin{macrocode}
-\def\@arrayclassz@LaTeX{%
- \ifcase \@lastchclass \@acolampacol \or \@ampacol \or
-   \or \or \@addamp \or
-   \@acolampacol \or \@firstampfalse \@acol \fi
- \edef\@preamble{\@preamble
-  \ifcase \@chnum
-     \hfil$\relax\@sharp$\hfil \or $\relax\@sharp$\hfil
-    \or \hfil$\relax\@sharp$\fi}%
-}%
-\def\@arrayclassz@ltx{%
- \ifcase\@lastchclass
-  \@acolampacol
- \or
-  \@ampacol
- \or
- \or
- \or
-  \@addamp
- \or
-  \@acolampacol
- \or
-  \@firstampfalse\@acoll
- \fi
- \ifcase\@chnum
-  \@addtopreamble{%
-   \hfil\array@row@rst$\relax\@sharp$\hfil
-  }%
- \or
-  \@addtopreamble{%
-   \array@row@rst$\relax\@sharp$\hfil
-  }%
- \or
-  \@addtopreamble{%
-   \hfil\array@row@rst$\relax\@sharp$%
-  }%
- \fi
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabclassz}
-%    \begin{macrocode}
-\def\@tabclassz@LaTeX{%
-  \ifcase\@lastchclass
-    \@acolampacol
-  \or
-    \@ampacol
-  \or
-  \or
-  \or
-    \@addamp
-  \or
-    \@acolampacol
-  \or
-    \@firstampfalse\@acol
-  \fi
-  \edef\@preamble{%
-    \@preamble{%
-      \ifcase\@chnum
-        \hfil\ignorespaces\@sharp\unskip\hfil
-      \or
-        \hskip1sp\ignorespaces\@sharp\unskip\hfil
-      \or
-        \hfil\hskip1sp\ignorespaces\@sharp\unskip
-      \fi}}%
-}%
-\def\@tabclassz@ltx{%
- \ifcase\@lastchclass
-  \@acolampacol
- \or
-  \@ampacol
- \or
- \or
- \or
-  \@addamp
- \or
-  \@acolampacol
- \or
-  \@firstampfalse\@acoll
- \fi
- \ifcase\@chnum
-  \@addtopreamble{%
-   {\hfil\array@row@rst\cell@font\ignorespaces\@sharp\unskip\hfil}%
-  }%
- \or
-  \@addtopreamble{%
-   {\cell@fil\hskip1sp\array@row@rst\cell@font\ignorespaces\@sharp\unskip\hfil}%
-  }%
- \or
-  \@addtopreamble{%
-   {\hfil\hskip1sp\array@row@rst\cell@font\ignorespaces\@sharp\unskip\cell@fil}%
-  }%
- \fi
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@tabclassiv}
-%    \begin{macrocode}
-\def\@tabclassiv@LaTeX{%
- \@addtopreamble\@nextchar
-}%
-\def\@tabclassiv@ltx{%
- \expandafter\@addtopreamble\expandafter{\@nextchar}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@arrayclassiv}
-%    \begin{macrocode}
-\def\@arrayclassiv@LaTeX{%
- \@addtopreamble{$\@nextchar$}%
-}%
-\def\@arrayclassiv@ltx{%
- \expandafter\@addtopreamble\expandafter{\expandafter$\@nextchar$}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@classv}
-%    \begin{macrocode}
-\def\@classv@LaTeX{%
- \@addtopreamble{\@startpbox{\@nextchar}\ignorespaces
- \@sharp\@endpbox}%
-}%
-\def\@classv@ltx{%
- \expandafter\@addtopreamble
- \expandafter{%
- \expandafter \@startpbox
- \expandafter {\@nextchar}%
- \pbox@hook\array@row@rst\cell@font\ignorespaces\@sharp\@endpbox
- }%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\@classx}
-%    \begin{macrocode}
-\def\@classx@array{%
-  \ifcase \@lastchclass
-  \@acolampacol \or
-  \@addamp \@acol \or
-  \@acolampacol \or
-  \or
-  \@acol \@firstampfalse \or
-  \@addamp
-  \fi
-}%
-\def\@classx@array@new{%
- \ifcase \@lastchclass
-  \@acolampacol
- \or
-  \@addamp \@acol
- \or
-  \@acolampacol
- \or
- \or
-  \@firstampfalse\@acoll
- \or
-  \@addamp
- \fi
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Repair other broken parts of \LaTeX}
-%
-% \begin{macro}{\@xbitor}
-% Expansion part has extraneous space token. Removed.
-%    \begin{macrocode}
-\def\@xbitor@LaTeX #1{\@tempcntb \count#1
-   \ifnum \@tempcnta =\z@
-   \else
-     \divide\@tempcntb\@tempcnta
-     \ifodd\@tempcntb \@testtrue\fi
-   \fi}%
-\def\@xbitor@ltx#1{%
- \@tempcntb\count#1\relax
- \@ifnum{\@tempcnta=\z@}{}{%
-  \divide\@tempcntb\@tempcnta
-  \@ifodd\@tempcntb{\@testtrue}{}%
- }%
-}%
-\@ifx{\@xbitor\@xbitor@LaTeX}{%
-  \class@info{Repairing broken LaTeX \string\@xbitor}%
-}{%
-  \class@info{Unrecognized LaTeX \string\@xbitor. Please update this document class! (Proceeding with fingers crossed.)}%
-}%
-\let\@xbitor\@xbitor@ltx
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Syntax}
-% \begin{macro}{\@gobble@opt@one}
-% The \cmd\@gobble@opt@one\ command eats up an optional argument
-% and one required argument.
-%    \begin{macrocode}
-\newcommand*\@gobble@opt@one[2][]{}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \subsection{Auto-indented Contents}
-% Facility to automatically determine the proper indentation of
-% the TOC entries.
-%
-% Note on \classname{hyperref} compatibility:
-% We must respect that
-% \cmd\contentsline\ now has a fourth argument.
-% So, instead of trying to override the meaning of \cmd\contentsline,
-% we use the aux file to remember max values from one run to the next.
-%
-% In this respect, this package retains compatibility with 
-% \classname{hyperref}.
-%
-% \begin{macro}{\@starttoc}
-% Install hooks at beginning and end of the TOC processing.
-%    \begin{macrocode}
-\def\@starttoc#1{%
-  \begingroup
-    \toc@pre
-    \makeatletter
-    \@input{\jobname.#1}%
-    \if@filesw
-      \expandafter\newwrite\csname tf@#1\endcsname
-      \immediate\openout \csname tf@#1\endcsname \jobname.#1\relax
-    \fi
-    \@nobreakfalse
-    \toc@post
-  \endgroup
-}%
-\def\toc@pre{}%
-\def\toc@post{}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\toc@@font}
-% Interface for setting the formatting characteristics of this part
-%  of the TOC.
-%
-% Note: \cmd\toc@@font\ is the common font for all auto-sizing toc commands,
-% although this, too, could become a dispatcher.
-% \changes{4.1a}{2008/01/19}{(AO, 461) Change the csname from \cs{@dotsep} to \cs{ltxu@dotsep}. The former is understood in mu. (What we wanted was a dimension.)}%
-%    \begin{macrocode}
-\def\toc@@font{}%
-\def\ltxu@dotsep{\z@}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\l@section}
-% Interface for determining which TOC elements are automatically indented.
-%
-% All of the \cmd\l@\dots\ commands simply go through the 
-% utility procedure \cmd\l@@sections. The calling convention is
-% to pass the name of self and the name of parent.
-% If you want to exclude any of these from the indentation
-% scheme, simply leave the \cmd\l@\dots\ command undefined.
-%
-% Note that the parent of ``section'' is nil, so we have to define a stub.
-% \begin{verbatim}\def\l@section{\l@@sections{}{section}}% Implicit #3#4\end{verbatim}
-% \begin{verbatim}\def\tocleft@{\z@}%\end{verbatim}
-% \begin{verbatim}\def\l@subsection{\l@@sections{section}{subsection}}% Implicit #3#4\end{verbatim}
-% \begin{verbatim}\def\l@subsubsection{\l@@sections{subsection}{subsubsection}}% Implicit #3#4\end{verbatim}
-% \begin{verbatim}\def\l@paragraph{\l@@sections{subsubsection}{paragraph}}% Implicit #3#4\end{verbatim}
-% \begin{verbatim}\def\l@subparagraph#1#2{\l@@sections{paragraph}{subparagraph}}% Implicit #3#4\end{verbatim}
-% \end{macro}
-%
-% Glom some \cmd\dimen\ registers.
-%    \begin{macrocode}
-\let\tocdim@section       \leftmargini
-\let\tocdim@subsection    \leftmarginii
-\let\tocdim@subsubsection \leftmarginiii
-\let\tocdim@paragraph     \leftmarginiv
-\let\tocdim@appendix      \leftmarginv
-\let\tocdim@pagenum       \leftmarginvi
-%    \end{macrocode}
-%
-% \begin{macro}{\toc@pre@auto}
-% \begin{macro}{\toc@post@auto}
-% We patch \cmd\@starttoc\ to:
-% 1) before TOC processing,
-% initialize the max registers and
-% set the needed dimensions from 
-% the values stored in the auxiliary file, and
-% 2) after TOC processing,
-% store out those max register values into the auxiliary file.
-%
-% Note that the font is set here: all other TOC entries must
-% override these font settings.
-% 
-% To activate this override of the standard \LaTeX\ processing,
-% the substyle does: \cmd\let\cmd\toc@pre\cmd\toc@pre@auto\
-% and \cmd\let\cmd\toc@post\cmd\toc@post@auto.
-%    \begin{macrocode}
-\def\toc@pre@auto{%
-  \toc@@font
-  \@tempdima\z@
-  \toc@setindent\@tempdima{section}%
-  \toc@setindent\@tempdima{subsection}%
-  \toc@setindent\@tempdima{subsubsection}%
-  \toc@setindent\@tempdima{paragraph}%
-  \toc@letdimen{appendix}%
-  \toc@letdimen{pagenum}%
-}%
-\def\toc@post@auto{%
-  \if@filesw
-   \begingroup
-    \toc@writedimen{section}%
-    \toc@writedimen{subsection}%
-    \toc@writedimen{subsubsection}%
-    \toc@writedimen{paragraph}%
-    \toc@writedimen{appendix}%
-    \toc@writedimen{pagenum}%
-   \endgroup
-  \fi
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\toc@setindent}
-%    \begin{macrocode}
-\def\toc@setindent#1#2{%
- \csname tocdim@#2\endcsname\tocdim@min\relax
- \@ifundefined{tocmax@#2}{\@namedef{tocmax@#2}{\z@}}{}%
- \advance#1\@nameuse{tocmax@#2}\relax
- \expandafter\edef\csname tocleft@#2\endcsname{\the#1}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\toc@letdimen}
-%    \begin{macrocode}
-\def\toc@letdimen#1{%
- \csname tocdim@#1\endcsname\tocdim@min\relax
- \@ifundefined{tocmax@#1}{\@namedef{tocmax@#1}{\z@}}{}%
- \expandafter\let\csname tocleft@#1\expandafter\endcsname\csname tocmax@#1\endcsname
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\toc@writedimen}
-%    \begin{macrocode}
-\def\toc@writedimen#1{%
- \immediate\write\@auxout{%
-  \gdef\expandafter\string\csname tocmax@#1\endcsname{%
-   \expandafter\the\csname tocdim@#1\endcsname
-  }%
- }%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\l@@sections}
-% The procedure for formatting the indented TOC entries.
-% We use control sequence names such as \cmd\tocmax@section\ and
-% \cmd\tocleft@section, the former being written to the auxiliary file
-% and the latter only defined for the duration of the TOC processing.
-%
-% Note that the assignment of \cmd\box\cmd\@tempboxa\ by \cmd\set@tocdim@pagenum\
-% must endure over the invocation of |#3|: it contains the 
-% page number which will be set just before the \cmd\par.
-% 
-% The arguments:\begin{enumerate}
-% \item[\#1] superior section
-% \item[\#2] this section
-% \item[\#3] content, including possible \cmd\numberline
-% \item[\#4] page number\end{enumerate}
-%    \begin{macrocode}
-\def\l@@sections#1#2#3#4{%
- \begingroup
-  \everypar{}%
-  \set@tocdim@pagenum\@tempboxa{#4}%
-  \global\@tempdima\csname tocdim@#2\endcsname
-  \leftskip\csname tocleft@#2\endcsname\relax
-  \dimen@\csname tocleft@#1\endcsname\relax
-  \parindent-\leftskip\advance\parindent\dimen@
-  \rightskip\tocleft@pagenum plus 1fil\relax
-  \skip@\parfillskip\parfillskip\z@
-  \let\numberline\numberline@@sections
-  \@nameuse{l@f@#2}%
-  \ignorespaces#3\unskip\nobreak\hskip\skip@
-  \hb@xt@\rightskip{\hfil\unhbox\@tempboxa}\hskip-\rightskip\hskip\z@skip
-%    \end{macrocode}
-% \changes{4.1n}{2009/12/13}{(AO, 574) protect against \classname{lineno.sty}, which forces a visit to the output routine, which appears to destroy the value of \cs{@tempdima}}%
-%
-% By side effect, set the value of, e.g., \cmd\tocdim@section. 
-%
-% Note that the \cmd\par\ must not be executed before the value of \cmd\@tempdima\ is expanded (outside the current group).
-% Otherwise, the \classname{lineno.sty} package may interfere (it unfortunately does a global assignment of \cmd\@tempdima). 
-%    \begin{macrocode}
-  \expandafter\par
-  \expandafter\aftergroup\csname tocdim@#2%
-  \expandafter\endcsname
-  \expandafter\endgroup
-              \the\@tempdima\relax
-}%
-%    \end{macrocode}
-% \changes{4.1a}{2008/01/19}{(AO, 479) Per: Dylan Thurston<dpt at math.harvard.edu>}%
-% In the call to \cmd\set@tocdim@pagenum, I am now exposing the use of the particular box register. 
-%    \begin{macrocode}
-\def\set@tocdim@pagenum#1#2{%
- \setbox#1\hbox{\ignorespaces#2}%
- \@ifdim{\tocdim@pagenum<\wd#1}{\global\tocdim@pagenum\wd#1}{}%
-}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \begin{macro}{\numberline@@sections}
-% \changes{4.1a}{2008/01/19}{(AO, 461) Change the csname from \cs{@dotsep} to \cs{ltxu@dotsep}. The former is understood in mu. (What we wanted was a dimension.)}%
-% The utility procedure for all \cmd\numberline\ processing in indented TOC entries.
-% The first argument is self.
-%
-% We use \cmd\@tempdima\ to pass a value around (via global assignment) because
-% \cmd\numberline\ executes inside a group if the 
-% \classname{hyperref} package is loaded.
-% Would that it were not so!
-%    \begin{macrocode}
-\def\numberline@@sections#1{%
- \leavevmode\hb@xt@-\parindent{%
-  \hfil
-  \@if@empty{#1}{}{%
-   \setbox\z@\hbox{#1.\kern\ltxu@dotsep}%
-   \@ifdim{\@tempdima<\wd\z@}{\global\@tempdima\wd\z@}{}%
-   \unhbox\z@
-  }%
- }%
- \ignorespaces
-}%
-\def\tocdim@min{\z@}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Lists}
-% \begin{macro}{\list}
-% Using \cmd\parshape\ to implement lists was always suspect
-% (can you get behind \cmd\parshape\cmd\@ne?) and we now see that
-% it was a mistake all along. Why? Because \cmd\parshape, like
-% \cmd\hangindent, achieves its effect via ``shifting'' the \cmd\hbox es
-% in a paragraph
-% instead of using \cmd\leftskip\ and \cmd\parindent, which is 
-% robust during column balancing.
-%
-% We introduce the alternative method with a hook into
-% the \LaTeX\ kernel procedure \cmd\list, which is
-% the implementation of all lists. 
-%
-%    \begin{macrocode}
-\def\list#1#2{%
-  \ifnum \@listdepth >5\relax
-    \@toodeep
-  \else
-    \global\advance\@listdepth\@ne
-  \fi
-  \rightmargin\z@
-  \listparindent\z@
-  \itemindent\z@
-  \csname @list\romannumeral\the\@listdepth\endcsname
-  \def\@itemlabel{#1}%
-  \let\makelabel\@mklab
-  \@nmbrlistfalse
-  #2\relax
-  \@trivlist
-  \parskip\parsep
-  \set@listindent
-  \ignorespaces
-}%
-\def\set@listindent@parshape{%
- \parindent\listparindent
- \advance\@totalleftmargin\leftmargin
- \advance\linewidth-\rightmargin
- \advance\linewidth-\leftmargin
- \parshape\@ne\@totalleftmargin\linewidth
-}%
-\def\set@listindent@{%
- \parindent\listparindent
- \advance\@totalleftmargin\leftmargin
- \advance\rightskip\rightmargin
- \advance\leftskip\@totalleftmargin
-}%
-\let\set@listindent\set@listindent@parshape
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \subsection{Hypertext capabilities}
-%
-% \begin{macro}{\href}
-% \begin{macro}{\url}
-% \begin{macro}{\URL@prefix}
-% \begin{macro}{\doi}
-% \begin{macro}{\doibase}
-% \changes{4.1b}{2008/08/12}{(AO, 487) Support for video figures and the \cs{setfloatlink} command}%
-% We provide support for the \cmd\href, \cmd\url, and \cmd\doi\ commands.
-% Packages, like \classname{hyperref}, may override these definitions
-% and provide better semantics.
-% \changes{4.1g}{2009/10/06}{(AO, 532) Both arguments of \cs{href} get sanitized}%
-% \changes{4.1j}{2009/10/24}{(AO, 545) Provide definition for \cs{doi} that does hypertext}%
-%    \begin{macrocode}
-\providecommand\href[0]{\begingroup\@sanitize@url\@href}%
-\def\@href#1{\@@startlink{#1}\endgroup\@@href}%
-\def\@@href#1{#1\@@endlink}%
-\providecommand \url  [0]{\begingroup\@sanitize@url \@url }%
-\def \@url #1{\endgroup\@href {#1}{\URL@prefix#1}}%
-\providecommand \URL@prefix [0]{URL }%
-\providecommand\doi[0]{\begingroup\@sanitize@url\@doi}%
-\def\@doi#1{\endgroup\@@startlink{\doibase#1}doi:\discretionary {}{}{}#1\@@endlink }%
-%changes{4.2a}{2017/11/21}{(MD) Use updated best practice to use https and doi.org}%
-\providecommand \doibase [0]{https://doi.org/}%
-\providecommand \@sanitize@url[0]{\chardef\cat@space\the\catcode`\ \@sanitize\catcode`\ \cat@space}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\@@startlink}
-% \begin{macro}{\@@endlink}
-% \begin{macro}{\pdfstartlink@attr}
-% \begin{macro}{\hypertext@enable@ltx}
-% How we define \cmd\@@startlink\ and \cmd\@@endlink\ will depend on 
-% whether we are running under \textsc{pdflatex}.
-% If so, and if PDF output is requested, then we use its primitives
-% to implement hypertext,
-% breaking out the link attributes in \cmd\pdfstartlink@attr\ 
-% and using the \classname{hyperref} defaults; 
-% \cmd\pdfstartlink@attr\ can be redefined by a client package.
-% Otherwise we fall back the Hyper\TeX\ standard and leave things to the DVI translator.
-% \changes{4.1j}{2009/10/25}{(AO, 545) hypertext capabilities off by default; enable with \classoption{hypertext}}
-%
-% A class or package that wishes to employ hypertext capabilities should
-% execute the \cmd\hypertext@enable@ltx\ procedure. 
-%    \begin{macrocode}
-\def\@@startlink#1{}%
-\def\@@endlink{}%
-\@ifxundefined \pdfoutput {\true@sw}{\@ifnum{\z@=\pdfoutput}{\true@sw}{\false@sw}}%
-{%
- \def\@@startlink@hypertext#1{\leavevmode\special{html:<a href="#1">}}%
- \def\@@endlink@hypertext{\special{html:</a>}}%
-}{%
- \def\@@startlink@hypertext#1{%
-  \leavevmode
-  \pdfstartlink\pdfstartlink@attr
-   user{/Subtype/Link/A<</Type/Action/S/URI/URI(#1)>>}%
-  \relax
- }%
- \def\@@endlink@hypertext{\pdfendlink}%
- \def\pdfstartlink@attr{attr{/Border[0 0 1 ]/H/I/C[0 1 1]}}%
-}%
-\def\hypertext@enable@ltx{%
- \let\@@startlink\@@startlink@hypertext
- \let\@@endlink\@@endlink@hypertext
-}%
-%    \end{macrocode}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-% \end{macro}
-%
-% \begin{macro}{\href}
-% \changes{4.1p}{2010/02/24}{(AO, 582) A patch of \classname{hyperref.sty} to provide backward compatibility to \TeX Live 2007's version 6.75r}%
-% The \cmd\href\ command of \classname{hyperref} was extend somewhere 
-% between versions 6.75r and 6.80e. We apply a repair to the earlier
-% version (if present) so that it works like the later version.
-%
-% The issue is the presence of whitespace, either following the \cmd\href\ token
-% or following the first argument's closing brace character. 
-% 
-%    \begin{macrocode}
-\def\href@Hy{\hyper@normalise \href@ }%
-\def\href@Hy@ltx{\@ifnextchar\bgroup\Hy@href{\hyper@normalise\href@}}%
-\def\Hy@href#{\hyper@normalise\href@}%
-\begingroup
-  \endlinechar=-1 %
-  \catcode`\^^A=14 %
-  \catcode`\^^M\active
-  \catcode`\%\active
-  \catcode`\#\active
-  \catcode`\_\active
-  \catcode`\$\active
-  \catcode`\&\active
-  \gdef\hyper@normalise@ltx{^^A
-    \begingroup
-    \catcode`\^^M\active
-    \def^^M{ }^^A
-    \catcode`\%\active
-    \let%\@percentchar
-    \let\%\@percentchar
-    \catcode`\#\active
-    \def#{\hyper@hash}^^A
-    \def\#{\hyper@hash}^^A
-    \@makeother\&^^A
-    \edef&{\string&}^^A
-    \edef\&{\string&}^^A
-    \edef\textunderscore{\string_}^^A
-    \let\_\textunderscore
-    \catcode`\_\active
-    \let_\textunderscore
-    \let~\hyper@tilde
-    \let\~\hyper@tilde
-    \let\textasciitilde\hyper@tilde
-    \let\\\@backslashchar
-    \edef${\string$}^^A
-    \Hy@safe@activestrue
-    \hyper@n@rmalise
-  }^^A
-  \catcode`\#=6 ^^A
-  \gdef\Hy@ActiveCarriageReturn@ltx{^^M}^^A
-  \gdef\hyper@n@rmalise@ltx#1#2{^^A
-    \def\Hy@tempa{#2}^^A
-    \ifx\Hy@tempa\Hy@ActiveCarriageReturn
-      \Hy@ReturnAfterElseFi{^^A
-        \hyper@@normalise{#1}^^A
-      }^^A
-    \else
-      \Hy@ReturnAfterFi{^^A
-        \hyper@@normalise{#1}{#2}^^A
-      }^^A
-    \fi
-  }^^A
-  \gdef\hyper@@normalise@ltx#1#2{^^A
-    \edef\Hy@tempa{^^A
-      \endgroup
-      \noexpand#1{\Hy@RemovePercentCr#2%^^M\@nil}^^A
-    }^^A
-    \Hy@tempa
-  }^^A
-  \gdef\Hy@RemovePercentCr@ltx#1%^^M#2\@nil{^^A
-    #1^^A
-    \ifx\limits#2\limits
-    \else
-      \Hy@ReturnAfterFi{^^A
-        \Hy@RemovePercentCr #2\@nil
-      }^^A
-    \fi
-  }^^A
-\endgroup
-\def\switch@hyperref@href{%
- \expandafter\@ifx\expandafter{\csname href \endcsname\href@Hy}{
-  \class@info{Repairing hyperref 6.75r \string\href}%
-  \let\hyper@normalise\hyper@normalise@ltx
-  \let\hyper@@normalise\hyper@@normalise@ltx
-  \let\hyper@n@rmalise\hyper@n@rmalise@ltx
-  \let\Hy@ActiveCarriageReturn\Hy@ActiveCarriageReturn@ltx
-  \let\Hy@RemovePercentCr\Hy@RemovePercentCr@ltx
-  \let\href\href@Hy@ltx
- }{}%
-}%
-\appdef\document@inithook{\switch@hyperref@href}%
-%    \end{macrocode}
-% \end{macro}
-%
-%
-% \begin{macro}{\typeout}
-% We make the \cmd\typeout\ procedure of \LaTeX\ be \cmd\long, 
-% because sometimes we are talking about \cmd\par.
-%    \begin{macrocode}
-\def\typeout@org#1{%
- \begingroup
-  \set@display@protect
-  \immediate\write\@unused{#1}%
- \endgroup
-}%
-\long\def\typeout@ltx#1{%
- \begingroup
-  \set@display@protect
-  \immediate\write\@unused{#1}%
- \endgroup
-}%
-\@ifx{\typeout\typeout@org}{%
- \let\typeout\typeout@ltx
- \true@sw
-}{%
- \rvtx@ifformat@geq{2020/10/01}%
-   {\true@sw}{\false@sw}%
-}%
- {\class@info{Making \string\typeout\space \string\long}}%
- {}%
-%    \end{macrocode}
-% \end{macro}
-%
-% \subsection{End of the \file{kernel} {\sc docstrip} module}
-% Here ends the module.
-%    \begin{macrocode}
-%</kernel>
-%    \end{macrocode}
-%
-% \Finale
-% \iffalse Here ends the programmer's documentation.\fi
-% \endinput
-%
-\endinput
-%%EOF