%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-1-23 on page I-147 in "fancypar --- Fancy layouts for individual paragraphs".
%%
%% 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{231.0pt}

  \addtolength\textwidth{-24pt}


%StartShownPreambleCommands
   \usepackage{lipsum,fancypar}
   \fancyparsetup{mark=$\gets$}
%StopShownPreambleCommands

\begin{document}
   \MarkedPar{\lipsum[2][1]}
   \MarkedPar[mark=$\to$,position=left]
             {\lipsum[2][2-3]}
\end{document}
