%% 
%%  A DANTE-Edition example
%% 
%%  Example 16-04-9 on page 245.
%% 
%%  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{153.70511pt}
\setlength\parindent{0pt}
\def\CMD#1{\texttt{\textbackslash #1}}

\usepackage{pstricks,pst-node}
\SpecialCoor

\begin{document}
\begin{pspicture}(-0.2,-1)(3,1)
 \cnode{12pt}{a}
 \pcline[nodesep=20pt,linestyle=dashed](a)(a)
 \rput{90}(a){\pcline[nodesep=20pt,
    linestyle=dashed](a)(a)}
 \rput[l](3,1){\rnode{b}{H}}
 \rput[l](3,-1){\rnode{c}{T}}
 \ncdiagg[angleA=180,armA=1.5,
   nodesepA=3pt]{b}{a}
 \nbput[nrot=:D,npos=1.3]{\CMD{ncdiagg}}
 \ncdiag[angleA=180,armA=1.5,armB=0,
   nodesepA=3pt]{c}{a}
 \naput[nrot=:D,npos=1.3]{\CMD{ncdiag}}
\end{pspicture}
\end{document}