%%
%% The LaTeX Companion, 3ed
%%
%% Example A-3-15 on page II-667 in "Rule boxes".
%%
%% 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}
%StartShownPreambleCommands

%StopShownPreambleCommands

\begin{document}
x111x
  \fbox{some text}
x222x
  \fbox{\rule[-5mm]{0cm}{15mm}more text}
x333x
\end{document}