%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 7-7-27 on page 398.
%%
%% Copyright (C) 2004 Frank Mittelbach, Michel Goossens,
%%    Johannes Braams, David Carlisle, and Chris Rowley
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3
%% of this license or (at your option) any later version.
%%
%% See http://www.latex-project.org/lppl.txt for details.
%%

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{183.0pt}
\StartShownPreambleCommands
\usepackage{ccfonts}
\usepackage[euler-digits]{eulervm}
\StopShownPreambleCommands
\begin{document}
The value can be 1, 2, or $-1$     (wrong!)\par
The value can be $1$, $2$, or $-1$ (right!)
\end{document}