%% 
%%  A DANTE-Edition example
%% 
%% 
%%  Copyright (C) 2010 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{225.70511pt}
\setlength\parindent{0pt}

\usepackage{uml}

\begin{document}
\umlDiagram[ref=Dia,sizeX=4cm,
  sizeY=2cm,innerBorder=5mm]{}
\umlClass[pos=\umlTop{Dia},
  refpoint=rt]{class1}{}{}
\umlClass[pos=\umlRightSep{class1},
  refpoint=lC]{class2}{}{}
\umlClass[pos=\umlBottomSep{class2},
  refpoint=rt]{lastClass}{}{}
\end{document}