% \iffalse 
%<*internal>
\iffalse
%</internal>
%<*readme>
___________________
The ENVIRON package
v0.2

Provides two things: a new way of defining
environments that read their contents before
processing; and, a \long version of amsmath's
\collect@body macro called \Collect@Body.

Here's an example:

  \NewEnviron{test}[3][]{"#1,#2,\BODY,#3"}
  \begin{test}[zero]{one}{last}
    three\par four
  \end{test}

Produces the equivalent of: 

  "zero,one,three\par four,last"

______________
Will Robertson
wspr 81 [at] gmail [dot] com

Copyright 2007-2008
Distributed under the LaTeX Project Public License
%</readme>
%<*internal>
\fi
\begingroup
%</internal>
%<*batchfile>
\input docstrip.tex
\keepsilent
\preamble

  __________________________________
  Copyright (C) 2007  Will Robertson

  License information appended.


\endpreamble
\postamble

Copyright (C) 2007 by Will Robertson <wspr81@gmail.com>

Distributable under the LaTeX Project Public License,
version 1.3c or higher (your choice). The latest version of
this license is at: http://www.latex-project.org/lppl.txt

This work is "maintained" (as per LPPL maintenance status) 
by Will Robertson.

This work consists of the file  environ.dtx
          and the derived files environ.pdf,
                                environ.sty, and
                                environ.ins.

\endpostamble
\askforoverwritefalse
\generate{\file{\jobname.sty}{\from{\jobname.dtx}{package}}}
%</batchfile>
%<batchfile>\endbatchfile
%<*internal>
\generate{\file{\jobname.ins}{\from{\jobname.dtx}{batchfile}}}
\nopreamble\nopostamble
\generate{\file{README.txt}{\from{\jobname.dtx}{readme}}}
\generate{\file{dtx-style.sty}{\from{\jobname.dtx}{dtx-style}}}
\endgroup
\immediate\write18{makeindex -s gind.ist -o \jobname.ind  \jobname.idx}
\immediate\write18{makeindex -s gglo.ist -o \jobname.gls  \jobname.glo}
%</internal>
%
%<*driver>
\documentclass{ltxdoc}
\EnableCrossrefs
\CodelineIndex
\RecordChanges
%\OnlyDescription
\usepackage{dtx-style}
\begin{document}
  \DocInput{\jobname.dtx}
\end{document}
%</driver>
%
%
% \fi
%
% \GetFileInfo{\jobname.sty}
% \CheckSum{0}
% \makeatletter
%
% \title{A couple of things involving environments}
% \author{Will Robertson}
% \date{\filedate \qquad \fileversion}
%
% \maketitle
%
% \begin{abstract}
% \noindent This package provides two things, one for document authors and one for macro authors. For the document authors, a new method of defining environments that might be more convenient on occassion. And for the package writers, \pkg{amsmath}'s \cmd\collect@body\ command, and a long version of the same, \cmd\Collect@Body.
% \end{abstract}
%
% \section{Introduction}
%
% This packages provides new commands for defining environments. Here's a trivial example:
% \begin{example}{}
% \NewEnviron{test}{%
%   \fbox{\parbox{1.5cm}{\BODY}}
%   \color{red}
%   \fbox{\parbox{1.5cm}{\BODY}}}
% 
% \begin{test}
%   par\par
%   graf
% \end{test}
% \end{example}
%
% \cmd\RenewEnviron\ can be used with the same syntax to redefine a pre\"existing environment.
%
% \section{For the document author}
%
% \LaTeX's standard method of defining environments looks like this (ignoring arguments for now):
% \codeline \cmd\newenvironment\marg{name}\marg{pre code}\marg{post code} .
%
% The advantage to using environments is that their contents is not treated as a macro argument, so there are less restrictions on what can exist inside, and the processing can be more efficient for long pieces of document text.
%
% The disadvantage of environments is that sometimes you really do want to collect up its body and apply some sort of command to the whole thing. This package provides a way to define such environments, and v0.2 of this package brings a new syntax: 
% \codeline \cmd\NewEnviron\marg{name}\marg{macro code}\oarg{final code} .\\
% You saw an example in the introduction; the body of the environment is contained within the macro |\BODY|, and \oarg{final code} is the code executed at |\end|\marg{name} (more on this later).
%
% \subsection{Environment arguments}
%
% If you want to use arguments to the environment, these are specified in the usual way:
% \codeline \cmd\NewEnviron\marg{name}\oarg{N.\,args}\oarg{opt.\,arg.}\marg{macro code}\oarg{final code} ,\\
% where \marg{macro code} has arguments |#1|, |#2|, \dots, as per traditional \LaTeX\ environment mandatory and optional arguments. Here's an example with two arguments; one optional argument (|#1|, which is |\today| if omitted) and one mandatory argument (|#2|):
% \begin{example}{}
% \NewEnviron{test}[2][\today]{%
%   \fbox{\parbox{3cm}{%
%     \textbf{#2}\\
%     \BODY\\
%     (#1)}}}
% 
% \begin{test}{Title}
%   par\par graf
% \end{test}
%
% \begin{test}[Yesterday]{Title}
%   par\par graf
% \end{test}
% \end{example}
%
% \subsection{\oarg{final code}} 
% This is the code executed at |\end|\marg{name} of the environment. 
% For the purposes of this package it is only designed (but is very useful indeed) for cleanup code such as space gobbling in the input text.
%
% \DescribeMacro{\environfinalcode}
% This macro sets a default value for the \oarg{final code} (unless manually specified) in each subsequent environment created with \cmd\NewEnviron. The default is to define each new environment postfixed by \cmd\ignorespacesafterend, like this:
% \codeline |\environfinalcode{\ignorespacesafterend}| .\\
% Here's a silly example:
% \begin{example}{}
% \environfinalcode{((finish))}
% \NewEnviron{test}{\fbox{\parbox{3cm}{\BODY}}}
% \begin{test}
%   par\par
%   graf
% \end{test}
% \end{example}
%
% Careful, \cmd\environfinalcode\ cannot contain square brackets without first protecting them with braces (\eg, 
% \codeline |\environfinalcode{[end]}| \\
% will not work but 
% \codeline |\environfinalcode{{[end]}}| \\
% will). This is because the optional argument to \cmd\NewEnviron\ itself uses square brackets as argument delimiters.
%
% \section{Test}
%
% Here's an example to ensure everything that you'd think should work, in fact, does:
% \begin{example}{}
% \NewEnviron{test}{%
%   \fbox{\parbox{\linewidth-
%     0.1cm*\currentgrouplevel}{\BODY}}
%   \setlength\fboxrule{2\fboxrule}
%   \fbox{\parbox{\linewidth-
%     0.1cm*\currentgrouplevel}{``\BODY''}}}
% 
% \begin{test}
%   outer\par
%   \def\tmp#1{*#1*}%
%   \tmp{aa}\par
%   \begin{test}
%     inner\par
%     \def\tmp#1{(#1)}\tmp{bb}
%   \end{test}
% \end{test}
% \end{example}
%
%
% \section{Backwards compatibility}
% 
% In v0.1 of this package, the \cmd\NewEnvironment\ macro was
% used instead (described below). There were a number of limitations with the different
% approach that it used, the main ones being:
% \begin{itemize}
%  \item Option processing occured with \emph{every} instance of |#1| 
%        (which represented the environment body),
%  \item Environment options were only available \emph{after} the first instance of |#1|.
% \end{itemize}
% Please, please, don't use \cmd\NewEnvironment.
%
% The code for this syntax is still loaded by this package for
% backwards compatibility, but in the next major release it will
% be moved to a conditional package option. Eventually, I'll 
% probably delete it from the package altogether.
%
% \subsection{Previous code documentation}
%
% Just in case you need the documentation for the old syntax, here it is:
% \codeline \cmd\NewEnvironment\marg{name}\marg{macro code} ,\\
% where \marg{macro code} has argument |#1| as everything inside the environment.
%
% Now, this kind of environment definition makes collecting arguments a little cumbersome. Arguments are defined with a separate macro that `gobbles up' the arguments inside the environment before the body is passed to \marg{macro code}.
% \codeline \cmd\EnvironArgs\marg{name}\oarg{N.\ args}\oarg{opt. arg.}\marg{arg. macro code} \\
% This follows the same syntax of defining a macro with several arguments and a possible optional argument at the beginning. Here's an example:
% \begin{example}{}
% \NewEnvironment{test}{(#1)\tmp}
% \EnvironArgs{test}[2][before]{\def\tmp{\par---#1/#2---}}
% \begin{test}{after}
%   par
%
%   graf
% \end{test}
% \end{example}
% 
% I've tried to ensure that whitespace is ignored at the appropriate places; without this additional code, there would be a space before `par' and after `graf' in the examples above.
%
% Environments created with \cmd\NewEnvironment\ are ended by the command \cmd\ignorespacesafterend, which means that if they're used in a paragraph then the |\end{...}| command will gobble space after it. (If the environment is a paragraph on its own, there will be no difference.)
%
% \newpage
% \section{For the macro author} 
%
% The \pkg{amsmath} package contains a macro that facilitates the functionality in the previous section, which package writers may wish to use directly. The canonical command is \cmd\collect@body, which I've also defined in \cmd\long\ form to be useable for multi-paragraph environments (\cmd\Collect@Body). Here's how it's used:
%
% \begin{example}{}
% \long\def\wrap#1{[#1]}
% \newenvironment{test}{\Collect@Body\wrap}{}
% \begin{test}
%   hello
%
%   there
% \end{test}
% \end{example}
%
% And here's a crude example with environment arguments:
%
% \begin{example}{}
% \long\def\wrap#1{[\arg#1]}
% \def\arg#1{---#1---\par}
% \newenvironment{test}{\Collect@Body\wrap}{}
% \begin{test}{arg}
%   hello
%
%   there
% \end{test}
% \end{example}
%
% \StopEventually{}
%
% \clearpage
% \part{\pkg{\jobname} implementation}
%\iffalse
%<*package>
%\fi
%
% This is the package.
%    \begin{macrocode}
\ProvidesPackage{environ}[2008/06/18 v0.2 A new way to define environments]
%    \end{macrocode}
%
% \PrintChanges
%
% \section{Begin}
%
% \begin{macro}{\environbodyname}
% \darg{control sequence}
% Changes the control sequence used to represent the environment body in its definition. Not to be used as a user command; but maybe one day it will be. Don't change this after defining any |\NewEnviron| environments!
%    \begin{macrocode}
\def\environbodyname#1{\def\env@BODY{#1}}
\environbodyname\BODY
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\environfinalcode}
% \darg{code}
% This is the \marg{code} that's executed by default at \cs{end}\marg{env.\,name}:
%    \begin{macrocode}
\def\environfinalcode#1{%
  \def\env@finalcode{#1}}
\environfinalcode{\ignorespacesafterend}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\longdef@c}
% \LaTeX3-inspired shorthands.
%    \begin{macrocode}
\def\longdef@c#1{%
  \expandafter\long\expandafter\def\csname#1\endcsname}
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\trim@spaces}
% \darg{tokens} Removes leading and trailing spaces from the (arbitrary) input.
% Thanks to Morten H\o gholm.
%    \begin{macrocode}
\catcode`\Q=3
\long\def\trim@spaces#1{\romannumeral-`\q\trim@trim@\noexpand#1Q Q}
\long\def\trim@trim@#1 Q{\trim@trim@@#1Q}
\long\def\trim@trim@@#1Q#2{#1}
\catcode`\Q=11
%    \end{macrocode}
% \changes{v0.2}{2008/06/16}{Added.}
% \end{macro}
%
% \section{\cs{collect@body}-related code}
%
% \begin{macro}{\collect@body}
% Now, \pkg{amsmath} defines \cmd\collect@body\ for us. But that package may not be loaded, and we don't want to have to load the whole thing just for this one macro.
%    \begin{macrocode}
\unless\ifdefined\collect@body
  \newtoks\@emptytoks
  \newtoks\@envbody
  \def\collect@body#1{%
    \@envbody{\expandafter#1\expandafter{\the\@envbody}}%
    \edef\process@envbody{\the\@envbody\noexpand\end{\@currenvir}}%
    \@envbody\@emptytoks \def\begin@stack{b}%
    \begingroup
    \expandafter\let\csname\@currenvir\endcsname\collect@@body
    \edef\process@envbody{%
      \expandafter\noexpand\csname\@currenvir\endcsname}%
    \process@envbody
  }
  \def\push@begins#1\begin#2{%
    \ifx\end#2\else 
      b\expandafter\push@begins
    \fi}
  \def\addto@envbody#1{%
    \global\@envbody\expandafter{\the\@envbody#1}}
  \def\collect@@body#1\end#2{%
    \edef\begin@stack{%
      \push@begins#1\begin\end \expandafter\@gobble\begin@stack}%
    \ifx\@empty\begin@stack
      \endgroup
      \@checkend{#2}%
      \addto@envbody{#1}%
    \else
      \addto@envbody{#1\end{#2}}%
    \fi
    \process@envbody}
\fi
%    \end{macrocode}
% \end{macro}
%
% \begin{macro}{\Collect@Body}
% And now we define our own `long' version.
%    \begin{macrocode}
\long\def\Collect@Body#1{%
  \@envbody{\expandafter#1\expandafter{\the\@envbody}}%
  \edef\process@envbody{\the\@envbody\noexpand\end{\@currenvir}}%
  \@envbody\@emptytoks \def\begin@stack{b}%
  \begingroup
  \expandafter\let\csname\@currenvir\endcsname\Collect@@Body
  \edef\process@envbody{%
    \expandafter\noexpand\csname\@currenvir\endcsname}%
  \process@envbody
}
\long\def\Push@Begins#1\begin#2{%
  \ifx\end#2\else 
    b\expandafter\Push@Begins
  \fi}
\long\def\Addto@Envbody#1{%
  \global\@envbody\expandafter{\the\@envbody#1}}
\long\def\Collect@@Body#1\end#2{%
  \edef\begin@stack{%
    \Push@Begins#1\begin\end\expandafter\@gobble\begin@stack}%
  \ifx\@empty\begin@stack
    \endgroup
    \@checkend{#2}%
    \Addto@Envbody{#1}%
  \else
    \Addto@Envbody{#1\end{#2}}%
  \fi
  \process@envbody}
%    \end{macrocode}
% \end{macro}
%
% \section{User-level syntax}
% \begin{macro}{\NewEnviron}
% This is the new one.
%    \begin{macrocode}
\def\NewEnviron{%
  \let\env@newcommand\newcommand
  \let\env@newenvironment\newenvironment
  \env@NewEnviron}
\def\RenewEnviron{%
  \let\env@newcommand\renewcommand
  \let\env@newenvironment\renewenvironment
  \env@NewEnviron}
%    \end{macrocode}
% \paragraph{Input argument parsing}
% The first optional argument:
%    \begin{macrocode}
\def\env@NewEnviron#1{%
  \@ifnextchar[
    {\env@new@i{#1}}
    {\env@new@iii{#1}{}}}
%    \end{macrocode}
% And the second:
%    \begin{macrocode}
\def\env@new@i#1[#2]{%
  \@ifnextchar[
    {\env@new@ii{#1}[#2]}
    {\env@new@iii{#1}{[#2]}}}
%    \end{macrocode}
% And the second: (cont.)
%    \begin{macrocode}
\def\env@new@ii#1[#2][#3]{%
  \env@new@iii{#1}{[#2][#3]}}
%    \end{macrocode}
% The final optional argument:
%    \begin{macrocode}
\long\def\env@new@iii#1#2#3{%
  \@temptokena={\env@new{#1}{#2}{#3}}%
  \@ifnextchar[{%
    \the\@temptokena
  }{%
    \expandafter\the\expandafter
      \@temptokena\expandafter[\env@finalcode]%
  }}
%    \end{macrocode}
% \paragraph{Environment creation code}
% \begin{macro}{\env@new}
% \darg{name of the environment}
% \darg{possible optional args (either `\meta{empty}' or `\texttt{[N]}' or `\texttt{[N][default]}')}
% \darg{environment code}
% \doarg{final code}
%    \begin{macrocode}
\long\def\env@new#1#2#3[#4]{%
%    \end{macrocode}
% Define the new environment to Collect its body and execute |env@#1@parse| on it.
%    \begin{macrocode}
  \env@newenvironment{#1}{%
    \expandafter\Collect@Body\csname env@#1@parse\endcsname
  }{#4}
%    \end{macrocode}
% |env@#1@parse| executes the body twice: the first time to save the body while ignoring the arguments; and the second time to process the environment definition itself while ignoring the environment body:
%    \begin{macrocode}
  \longdef@c{env@#1@parse}##1{%
    \csname env@#1@save@env\endcsname##1\env@nil
    \csname env@#1@process\endcsname##1\env@nil}%
%    \end{macrocode}
% These must be defined on a per-environment basis in order to get the argument gobbling right: (because there are a variable number of arguments)
%    \begin{macrocode}
  \expandafter\env@newcommand
    \csname env@#1@save@env\endcsname#2{\env@save}%
  \expandafter\env@newcommand
    \csname env@#1@process\endcsname#2{#3\env@ignore}}
%    \end{macrocode}
% \end{macro}
% \begin{macro}{\env@save}
% If \cmd{\env@BODY} were variable, this macro would have to be saved for every environment definition individually; at the moment we just use a global definition.
% Use \cmd\trim@spaces\ to remove surrounding space:
%    \begin{macrocode}
\long\def\env@save#1\env@nil{%
  \expandafter\edef\env@BODY{%
    \unexpanded\expandafter
      \expandafter\expandafter{\trim@spaces{#1}}}}
%    \end{macrocode}
% \end{macro}
% This is the same as a \cmd\@gobblenil\ but long and less likely to exist in the environment body:
%    \begin{macrocode}
\long\def\env@ignore#1\env@nil{}
%    \end{macrocode}
% \changes{v0.2}{2008/06/16}{Added.}
% \end{macro}
%
% \section{Backwards compatibility}
% \begin{macro}{\NewEnvironment}
% \darg{Environment name}
% \darg{Macro definition applied to env.\ body}
% Here's our new environment definition macro. First of all wrap it up appropriately for new- or renew- 
%    \begin{macrocode}
\newcommand\NewEnvironment{%
  \let\env@newenvironment\newenvironment
  \let\env@newcommand\newcommand
  \Make@Environment}
\newcommand\RenewEnvironment{%
  \let\env@newenvironment\renewenvironment
  \let\env@newcommand\renewcommand
  \Make@Environment}
%    \end{macrocode}
% And here we go:
%    \begin{macrocode}
\newcommand\Make@Environment[2]{%
%    \end{macrocode}
% Initial `argument' parser, does nothing but remove leading space:
%    \begin{macrocode}
  \expandafter\let\csname env@args@#1\endcsname\ignorespaces
%    \end{macrocode}
% We use \cmd\Collect@Body\ to grab the argument (always \cmd\long)
%    \begin{macrocode}
  \env@newenvironment{#1}{%
    \expandafter\Collect@Body\csname env@@#1\endcsname}{\ignorespacesafterend}%
%    \end{macrocode}
% Now precede the env.\ body by the argument parsing command, which may or may not be defined in \cmd\EnvironArgs\ (and \cmd\unskip\ removes trailing space)
%    \begin{macrocode}  
  \longdef@c{env@@#1}##1{%
    \csname env@@@#1\endcsname{%
      \csname env@args@#1\endcsname##1\unskip}}%
%    \end{macrocode}
% And then pass it all off to the environment macro (|#2|), 
%    \begin{macrocode}  
  \longdef@c{env@@@#1}##1{#2}}
%    \end{macrocode}
% \changes{v0.2}{2008/06/11}{Changed \cs{@currenv} to \texttt{\#1} to allow nesting.}
% \changes{v0.2}{2008/06/16}{Deprecated.}
% \end{macro}
%
% \begin{macro}{\EnvironArgs}
% \darg{Environment name}
% \doarg{Number of arguments}
% \doarg{Optional argument}
% \darg{Argument macro code}
% Tedious argument parsing:
%    \begin{macrocode}
\newcommand\EnvironArgs[1]{%
  \@ifnextchar[
    {\Env@Args{#1}}
    {\Env@Args{#1}[0]}}
%    \end{macrocode}
% Tedious argument parsing:
%    \begin{macrocode}
\long\def\Env@Args#1[#2]{%
  \@ifnextchar[
    {\Env@@@Args{#1}[#2]}
    {\Env@@Args{#1}[#2]}}
%    \end{macrocode}
% This is when there is no optional argument. In this case and the next, we simply define a command that is inserted when the argument body is processed (see \cmd\NewEnvironment). \cmd\ignorespaces\ removes leading space after the arguments. 
%    \begin{macrocode}
\long\def\Env@@Args#1[#2]#3{%
  \expandafter\renewcommand\csname env@args@#1\endcsname[#2]{%
    #3\ignorespaces}}
%    \end{macrocode}
% Same as above when there is an optional argument:
%    \begin{macrocode}
\long\def\Env@@@Args#1[#2][#3]#4{%
  \expandafter\renewcommand\csname env@args@#1\endcsname[#2][#3]{%
    #4\ignorespaces}}
%    \end{macrocode}
% \end{macro}
%
%\iffalse
%</package>
%\fi
%
%
%\iffalse
%<*dtx-style>
%    \begin{macrocode}
\ProvidesPackage{dtx-style}

\errorcontextlines=999

\def\@dotsep{1000}
\setcounter{tocdepth}{2}
\setlength\columnseprule{0.1pt}
\renewcommand\tableofcontents{\relax
  \begin{multicols}{2}[\section*{\contentsname}]\small
    \@starttoc{toc}\relax
  \end{multicols}}

\setcounter{IndexColumns}{2}
\renewenvironment{theglossary}
  {\small\list{}{}
     \item\relax
     \glossary@prologue\GlossaryParms 
     \let\item\@idxitem \ignorespaces 
     \def\pfill{\hspace*{\fill}}}
  {\endlist}

\usepackage{booktabs,calc,color,enumitem,fancyvrb,graphicx,ifthen,refstyle,subfig,varioref}
\expandafter\usepackage\expandafter{\jobname}

\usepackage{url}

\usepackage[sc,osf]{mathpazo}

\linespread{1.1}      % A bit more space between lines
\frenchspacing         % Remove ugly extra space after punctuation
  
\definecolor{niceblue}{rgb}{0.2,0.4,0.8}
\newenvironment{example}[1]
  {\VerbatimEnvironment
   \def\Options{#1}%
   \begin{VerbatimOut}[gobble=2]{\examplefilename}}
  {\end{VerbatimOut}\relax
   \typesetexample}

\fvset{formatcom=\color{niceblue}}
\DefineShortVerb{\|}

\def\theCodelineNo{\textcolor{niceblue}{\sffamily\tiny\arabic{CodelineNo}}}

\let\examplesize\normalsize
\let\auxwidth\relax

\newlength\examplewidth\newlength\verbatimwidth
\newlength\exoutdent   \newlength\exverbgap
\setlength\exverbgap{1em}
\setlength\exoutdent{-0.15\textwidth}
\newsavebox\verbatimbox
\edef\examplefilename{\jobname.example}

\newcommand\typesetexample{\relax
   \smallskip
   \noindent
   \begin{minipage}{\linewidth}
   \color{niceblue}
   \hrulefill\par
   \edef\@tempa{[gobble=0,fontsize=\noexpand\small,\Options]}%
   \begin{lrbox}{\verbatimbox}\relax
     \expandafter\BVerbatimInput\@tempa{\examplefilename}%
   \end{lrbox}
   \begin{list}{}{\setlength\itemindent{0pt}
                  \setlength\leftmargin\exoutdent
                  \setlength\rightmargin{0pt}}\item
   \ifx\auxwidth\relax
     \setlength\verbatimwidth{\wd\verbatimbox}%
   \else
     \setlength\verbatimwidth{\auxwidth}%
   \fi
   \begin{minipage}[c]{\textwidth-\exoutdent-\verbatimwidth-\exverbgap}
     \catcode`\%=14\centering\linespread{1.6}\input\examplefilename\relax
   \end{minipage}\hfill
   \begin{minipage}[c]{\verbatimwidth}
     \usebox\verbatimbox
   \end{minipage}
   \end{list}
   \par\noindent\hrulefill
   \end{minipage}\par
   \smallskip\noindent}

\newcommand*\setverbwidth[1]{\def\auxwidth{#1}}

\newcommand*\name[1]{{#1}}
\newcommand*\pkg[1]{\textsf{#1}}
\newcommand*\feat[1]{\texttt{#1}}
\newcommand*\opt[1]{\texttt{#1}}

\newcommand*\ltx[1]{%
  \ifx3#1\relax
    \textsc{ltx3}%
  \else
    \LaTeXe
  \fi}

\newcommand\note{\unskip\footnote}

\let\latin\textit
\def\eg{\latin{e.g.}}
\def\Eg{\latin{E.g.}}
\def\ie{\latin{i.e.}}
\def\etc{\@ifnextchar.{\latin{etc}}{\latin{etc.}\@}}

\def\STIX{\textsc{stix}}
\def\MacOSX{Mac~OS~X}
\def\ascii{\textsc{ascii}}
\def\OMEGA{Omega}
\def\CTAN{\textsc{ctan}}

\newcounter{argument}
\g@addto@macro\endmacro{\setcounter{argument}{0}}
\newcommand*\darg[1]{%
  \stepcounter{argument}%
  {\ttfamily\char`\{\char`\#\theargument\char`\}:~}#1\par\noindent\ignorespaces}
\newcommand*\doarg[1]{%
  \stepcounter{argument}%
  {\ttfamily[\char`\#\theargument]:~}#1\par\noindent\ignorespaces}

\def\codeline{\par\hspace{0.5\parindent}}

\newcommand\unichar[2]{\textsc{\MakeLowercase{u+#1: #2}}}

\setlength\parindent{2em}

%    \end{macrocode}
%</dtx-style>
%\fi
%
% \typeout{*************************************************************}
% \typeout{*}
% \typeout{* To finish the installation you have to move the following}
% \typeout{* file into a directory searched by XeTeX:}
% \typeout{*}
% \typeout{* \space\space\space environ.sty}
% \typeout{*}
% \typeout{*************************************************************}
%
\endinput