%%
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%%  Example 5-13-33 on page 295.
%%
%%  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}
\StartShownPreambleCommands
\usepackage{pstricks}
\StopShownPreambleCommands
\begin{document}
\SpecialCoor
\begin{pspicture}[showgrid=true](4,3)
\pscustom[linewidth=1.5pt]{%
 \arrows{|->}
 \code{
    80 140 5 5 ArrowA    % leaves 80 140 on stack
    30 -30 110 75 ArrowB % leaves 30 -30 105.41 68.986
    curveto}}            % curve for three points
\psline[linestyle=dashed]%
   (5pt,5pt)(80pt,140pt)(30pt,-30pt)(110pt,75pt)
\uput[0](80pt,140pt){(80pt,140pt)}
\uput[0](30pt,-30pt){(30pt,--30pt)}
\end{pspicture}
\end{document}