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%%
%% This is file `xtrex4.tex',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% extract.dtx (with options: `xtrex4')
%%
%% ---------------------------------------
%% Copyright (C) 2004-2005 Hendri Adriaens
%% ---------------------------------------
%%
%% This work may be distributed and/or modified under the
%% conditions of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% and version 1.3 or later is part of all distributions of LaTeX
%% version 2003/12/01 or later.
%%
%% This work has the LPPL maintenance status "maintained".
%%
%% This Current Maintainer of this work is Hendri Adriaens.
%%
%% This work consists of the file extract.dtx and the derived files
%% extract.sty, xtrex1.tex, xtrex2.tex, xtrex3.tex, xtrex4.tex,
%% xtrex5.tex, xtrex6.tex and xtrex7.tex.
%%
%% The following files constitute the extract package and must be
%% distributed as a whole: readme, extract.dtx, extract.pdf and
%% extract.sty.
%%
\documentclass{article}
\usepackage[
active,
generate=file,
extract-env=equation*
]{extract}
\begin{extract*}
\usepackage{amsmath}
\end{extract*}
\begin{document}
Some text.
\begin{equation*}
x^2+y^2=z^2
\end{equation*}
\begin{extract}
$x=3$, $y=4$ and $z=5$
satisfy this equation.
\end{extract}
\end{document}
\endinput
%%
%% End of file `xtrex4.tex'.
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