%%
%% The LaTeX Companion, 3ed
%%
%% Example 10-9-1 on page II-88 in "Monospaced (typewriter) fonts".
%%
%% 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}
%StartShownPreambleCommands
\usepackage[T1]{fontenc}
\usepackage[scaled=0.85]{luximono}
\newcommand\allletters{The dazed brown
 fox quickly gave 12345--67890 jumps!
 x-height=\the\fontdimen5\font\ }
%StopShownPreambleCommands

\begin{document}
\raggedright
\texttt{LuxiMono:\\ \allletters}
\par \renewcommand\ttdefault{cmtt}
\texttt{CM Typewriter:\\ \allletters}
\par \renewcommand\ttdefault{qcr}
\texttt{Adobe Courier:\\ \allletters}
\end{document}