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+% \iffalse meta-comment
+%
+% File: zref-check.tex
+%
+% This file is part of the LaTeX package "zref-check".
+%
+% Copyright (C) 2021  Gustavo Barros
+%
+% It may be distributed and/or modified under the conditions of the
+% LaTeX Project Public License (LPPL), either version 1.3c of this
+% license or (at your option) any later version.  The latest version
+% of this license is in the file:
+%
+%    https://www.latex-project.org/lppl.txt
+%
+% and version 1.3 or later is part of all distributions of LaTeX
+% version 2005/12/01 or later.
+%
+%
+% This work is "maintained" (as per LPPL maintenance status) by
+% Gustavo Barros.
+%
+% This work consists of the files zref-check.dtx,
+%                                 zref-check.ins,
+%                                 zref-check.tex,
+%                                 zref-check-code.tex,
+%           and the derived files zref-check.sty and
+%                                 zref-check.pdf,
+%                                 zref-check-code.pdf.
+%
+% The released version of this package is available from CTAN.
+%
+% -----------------------------------------------------------------------
+%
+% The development version of the package can be found at
+%
+%    https://github.com/gusbrs/zref-check
+%
+% for those people who are interested.
+%
+% -----------------------------------------------------------------------
+%
+% \fi
+
+\documentclass{l3doc}
+
+% Have \GetFileInfo pick up date and version data
+\usepackage{zref-check}
+
+\NewDocumentCommand\opt{m}{\texttt{#1}}
+
+\begin{document}
+
+\GetFileInfo{zref-check.sty}
+
+\title{%
+  The \pkg{zref-check} package%
+  \thanks{This file describes \fileversion, last revised \filedate.}%
+}
+
+\author{%
+  Gustavo Barros%
+  \thanks{\url{https://github.com/gusbrs/zref-check}}%
+}
+
+\date{\filedate}
+
+\maketitle
+
+\begin{abstract}
+  \pkg{zref-check} provides an user interface for making \LaTeX{}
+  cross-references flexibly, while allowing to have them checked for
+  consistency with the document structure as typeset.  Statements such as
+  ``above'', ``on the next page'', ``previously'', ``as will be discussed'',
+  ``on the previous chapter'' and so on can be given to \cs{zcheck} in
+  free-form, and a set of ``checks'' can be specified to be run against a
+  given \texttt{label}, which will result in a warning at compilation time if
+  any of these checks fail.  \cs{zctarget} and the \texttt{zcregion}
+  environment are also defined as a means to easily set label targets to
+  arbitrary places in the text which can be referred to by \cs{zcheck}.
+\end{abstract}
+
+\tableofcontents
+
+\DisableImplementation
+
+\DocInput{zref-check.dtx}
+
+\end{document}