%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 6-2-41 on page 352.
%% 
%%  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{111.83385pt}
\setlength\parindent{0pt}
\StartShownPreambleCommands
\usepackage{pstricks,pst-node}
\StopShownPreambleCommands
\begin{document}
\Cnode[radius=0.5cm](1.5,0){A}%
\ncloop[angleA=0,angleB=180,
  nodesepB=3pt,linearc=0.4cm]{<-<}{A}{A}
\psline[linewidth=0.1pt,tbarsize=5pt]{|<->|}(2.5,0)(2.5,1)
\uput[0]{90}(2.5,0.5){\texttt{loopsize}}
\ncloop[angleB=-10,angleA=-170,linearc=0.2cm,
    loopsize=0.5cm]{->}{A}{A}
\psline[linewidth=0.1pt,tbarsize=5pt]{|<->|}(0.4,-0.6)(0.5,-0.2)
\uput[180]{70}(.5,-0.25){\texttt{loopsize}}
\end{document}