%% 
%%  A DANTE-Edition example
%% 
%%  Example 16-02-9 on page 231.
%% 
%%  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{129.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks,pst-node}

\begin{document}
\Cnode[radius=0.5cm](1.5,0){A}%
\ncloop[angleA=0,angleB=180,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=.1pt,tbarsize=5pt]{|<->|}(.4,-.6)(.5,-.2)
\uput[180]{70}(.5,-0.25){\texttt{loopsize}}
\end{document}