File: 2-4-3.ltx

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%%
%% The LaTeX Companion, 3ed
%%
%% Example 2-4-3 on page I-78 in "Fancier labels".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{180.0pt}
%StartShownPreambleCommands
\usepackage[nospace]{varioref}
\labelformat{section}{section~#1}
\labelformat{equation}{equation~(#1)}
%StopShownPreambleCommands

\begin{document}
\section{An example}\label{sec}
\Ref{sec} shows the use of the \verb=\labelformat=
declaration with a reference to \ref{eq}.
\begin{equation} a = b \label{eq} \end{equation}
\end{document}