%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-5-21 on page 397.
%% 
%%  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}
%
\makeatletter
\newcommand\xyPlain[1]{%
  \ThreeDput[normal=0 0 1](0,0,0){% xy-plane
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,#1)
    \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$y$}%
      \uput[-90]{0.2}(#1,0){$x$}%
    \fi}}
\newcommand\xzPlain[1]{%
  \ThreeDput[normal=0 -1 0](0,0,0){% xz-plane
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,5)
    \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$z$}%
      \uput[-90]{0.2}(#1,0){$x$}%
    \fi}}
\newcommand\yzPlain[1]{%
  \ThreeDput[normal=1 0 0](0,0,0){% yz-plane
    \psgrid(0,0)(#1,#1)%
    \psline{->}(0,0)(0,#1)
    \psline{->}(0,0)(#1,0)
    \ifdim\psk@gridlabels pt>\z@
      \uput[180]{0.2}(0,#1){$z$}%
      \uput[-90]{0.2}(#1,0){$y$}%
    \fi}}
\def\IIIDKOSystem{\@ifnextchar[{\IIIDKOSystem@i}{\IIIDKOSystem@i[]}}
\def\IIIDKOSystem@i[#1]#2{%
  \addto@par{#1}%
  \use@par%
  \xyPlain{#2}\xzPlain{#2}\yzPlain{#2}}
\makeatother
\StartShownPreambleCommands
\usepackage{pstricks,pst-3d}
\StopShownPreambleCommands
\begin{document}
\begin{pspicture}(-4,-2.5)(-2,3)
  \psset{subgriddiv=0,griddots=10,gridlabels=7pt,
    unit=0.7,viewpoint=1 1.5 0.5,viewangle=-30}
  \IIIDKOSystem{5}% see above
  \ThreeDput(0,0,0){\psframe*[linecolor=.!80](4,4)}
  \ThreeDput(2,2,0){\Huge below}
\end{pspicture}
\end{document}