%%
%% The LaTeX Companion, 3ed
%%
%% Example 13-2-2 on page II-303 in "Setting or getting the current language".
%%
%% 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{159.0pt}

  \sloppy  % to show what happens without hyphenation

%StartShownPreambleCommands
  \usepackage[english]{babel}
%StopShownPreambleCommands

\begin{document}
This text shows the effect of hyphenation.\par
\begin{hyphenrules}{nohyphenation}
This text shows the effect of hyphenation turned off.
\end{hyphenrules}
\end{document}