%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-4-36 on page I-198 in "microtype \& soul --- Letterspacing or stealing sheep".
%%
%% 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{135.0pt}

%StartShownPreambleCommands
\usepackage{soul,color}
\sethlcolor{yellow} \setulcolor{blue} \setstcolor{red}
%StopShownPreambleCommands

\begin{document}
Rules \hl{are now} in \st{red} or \ul{blue}.
\end{document}