%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-3-35 on page 382.
%% 
%%  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{183.83385pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-tree}
\StopShownPreambleCommands
\begin{document}
\psset{levelsep=.75cm,labelsep=5pt,%
  treenodesize=0.3}\large
\pstree[treemode=L,angleB=-90,angleA=90]{%
   \pstree[treemode=R,angleA=-90,%
     angleB=90]{\TC*}{
      \TC~{j}\TC~{G}\TC~{X}
      \TC~{g}\TC~{\_}\TC~{H}}%
}{ \TC~{G}\TC~{g}\TC~{j}
   \TC~{X}\TC~{\_}\TC~{H}}
%
\psset{tnyref=0.3}% <-----
\pstree[treemode=L,angleB=-90,angleA=90]{%
   \pstree[treemode=R,angleA=-90,%
     angleB=90]{\TC*}{
      \TC~{j}\TC~{G}\TC~{X}
      \TC~{g}\TC~{\_}\TC~{H}
   }%
}{ \TC~{G}\TC~{g}\TC~{j}
   \TC~{X}\TC~{\_}\TC~{H}}
\end{document}