%%
%% A DANTE-Edition example
%%
%% Example 16-04-11 on page 246.
%%
%% 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{177.70511pt}
\setlength\parindent{0pt}
\usepackage{pstricks-add}
\begin{document}
\begin{pspicture}(4,6)
\cnode*(0,0){2pt}{A} \cnode*(0.25,0){2pt}{C}
\cnode*(0.5,0){2pt}{E}\cnode*(0.75,0){2pt}{G}
\cnode*(2,4){2pt}{B} \cnode*(2.5,4.5){2pt}{D}
\cnode*(3,5){2pt}{F} \cnode*(3.5,5.5){2pt}{H}
{\psset{arrowscale=2,linearc=0.2,
linecolor=red,armA=0.5, angleA=90}
\pcdiagg[lineAngle=20]{->}(A)(B)
\pcdiagg[lineAngle=20]{->}(C)(D)
\pcdiagg[lineAngle=20]{->}(E)(F)
\pcdiagg[lineAngle=20]{->}(G)(H)}
\end{pspicture}
\end{document}
