%%
%% The LaTeX Companion, 2ed (second printing August 2004)
%%
%% Example 9-2-5 on page 548.
%%
%% 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{111.0pt}
\setlength\parindent{10pt}
\StartShownPreambleCommands
\usepackage[english]{babel}    \useshorthands{"}
\defineshorthand{"a}{\"{a}}    \defineshorthand{"i}{\"{\i}}
\aliasshorthand{"}{|}
\StopShownPreambleCommands
\begin{document}
This shows the use and effect of \verb="a=: "a and \verb="i=: "i.

This shows the use and effect of \verb=|a=: |a and \verb=|i=: |i.
\end{document}