<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">\documentclass{ppex}
\nonstopmode
\usepackage {xy}
\pagestyle{empty}
\setlength\textwidth{207.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage {xy}
\[\begin{xy}
  0*{DL} ,+/r1cm/*{DR}
 ,&lt;0cm,1cm&gt;*{UL} ,&lt;1cm,1cm&gt;*{UR}
 ,(5,5)*{5,5}
\end{xy}\]
\end{document}
</pre></body></html>