%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-3-23 on page I-349 in "paracol --- Several text streams aligned".
%%
%% 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{183.0pt}
\setlength\parindent{0pt}
\addtolength\textwidth{-10pt}
\setlength\columnsep{35pt} % no longer really necessary but we keep it
% so that the examples in the book are comparable
%StartShownPreambleCommands
\usepackage{lineno,paracol}
\definecolumnpreamble{0}{\linenumbers}
\definecolumnpreamble{1}{\nolinenumbers}
%StopShownPreambleCommands
\begin{document}
\begin{paracol}{3}
Left \\ \mbox{} \switchcolumn
Middle and more \switchcolumn
Right on two lines \switchcolumn*
Left again and again \switchcolumn Middle
\end{paracol}
\end{document}
