%%
%% The LaTeX Companion, 3ed
%%
%% Example 8-4-1 on page I-614 in "tcolorbox --- The basic usage".
%%
%% 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{207.0pt}


  \addtolength\textwidth{-4pt}


%StartShownPreambleCommands
\usepackage{tcolorbox}
%StopShownPreambleCommands

\begin{document}
A paragraph before with two lines of text
to show the indentation and the measure.
\begin{tcolorbox}
 A \texttt{tcolorbox} can be subdivided
 into two parts.
\tcblower
 If \verb|\tcblower| is given then anything
 below forms the lower part of the box.
\end{tcolorbox}
And a paragraph after the box.
\end{document}
