%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-3-12 on page I-341 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{141.0pt}
\sloppy
%StartShownPreambleCommands
\usepackage{paracol}
%StopShownPreambleCommands

\begin{document}
\begin{paracol}{4}   \setlength\parindent{0pt}
 Same \switchcolumn line \switchcolumn here \switchcolumn[0]
 But \switchcolumn*[\tiny sync after first column]
                    no \switchcolumn longer \switchcolumn*
 Why \switchcolumn[1] back? \switchcolumn* Explain!
\end{paracol}
\end{document}