%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 5-10-1 on page 260.
%% 
%%  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{111.83385pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pstricks}
\StopShownPreambleCommands
\begin{document}
\psset{linecolor=blue,arrowscale=1.5}
\psline{->}(0,1ex)(1,1ex)   \psline{>-}(2,1ex)(3,1ex)  \\
\psline{<<-|}(0,1ex)(1,1ex) \psline{[-<<}(2,1ex)(3,1ex)\\
\psline{]-|}(0,1ex)(1,1ex)  \psline{[->}(2,1ex)(3,1ex) \\
\psline{]-o}(0,1ex)(1,1ex)
\end{document}