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\NeedsTeXFormat{LaTeX2e}
\ProvidesPackage{docmute}[2012/03/22 v1.4 Input stand-alone documents]
\def\docmute@docenv{document}
\long\def\docmute@gobblepreamble#1\begin#2{%
\def\docmute@thisenv{#2}%
\ifx\docmute@thisenv\docmute@docenv
\begin{document}%
\else
\expandafter\docmute@gobblepreamble
\fi
}
\let\docmute@document=\document
\let\docmute@enddocument=\enddocument
\let\docmute=\docmute@gobblepreamble
\def\document{%
\docmute@document
\newcount\docmute@nestinglevel
\docmute@nestinglevel=0\relax
\let\documentclass=\docmute
\renewenvironment{document}{%
\endgroup
\advance \docmute@nestinglevel 1\relax
\ignorespaces
}{%
\ifnum\docmute@nestinglevel=0
\expandafter\docmute@enddocument
\else
\advance \docmute@nestinglevel -1\relax
\begingroup
\@ignoretrue
\def\@currenvir{document}%
\endinput
\fi
}%
\ignorespaces
}
\DeclareOption{nested}{}% for backwards compatibility only
\ProcessOptions
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