%% 
%%  A DANTE-Edition example
%% 
%%  Example 11-03-33 on page 138.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  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.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{201.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks}

\begin{document}
\SpecialCoor
\begin{pspicture}[showgrid](4,3)
\pscustom[linewidth=1.5pt]{%
 \arrows{|->}
 \code{%
    80 140 5 5 ArrowA    % 80 140 on the stack
    30 -30 110 75 ArrowB % 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}