%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-12-14 on page 275.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  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{135.83385pt}
\setlength\parindent{0pt}
\setlength\fboxsep{0pt}
\StartShownPreambleCommands
\usepackage{pstricks}
\newcommand*\exa[1][0pt]{%
  \fbox{\clipbox[#1]{%
    \begin{pspicture}(1,0.5)\psline(2,2)
    \end{pspicture}}}}
\StopShownPreambleCommands
\begin{document}
\psset{linewidth=10pt}
\fbox{\begin{pspicture}(1,0.5)\psline(2,2)\end{pspicture}}
\exa\\[12pt]
\exa[10pt] \exa[-10pt]
\fbox{\begin{pspicture*}(1,0.5)\psline(2,2)\end{pspicture*}}
\end{document}