<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 [frame]{xy}
\pagestyle{empty}
\setlength\textwidth{183.0pt}
\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage [frame]{xy}
\[\begin{xy}
 ,(0,0)*+=[o][F]\txt{Box}
 ,(12,0)*+=[o]=&lt;9mm&gt;[F]\txt{Box}
 ,(0,12)*+=[o]+[F]\txt{Box}
 ,(12,12)*+=[o]++[F]\txt{Box}
 ,(0,24)*+=[o]-[F]\txt{Box}
 ,(12,24)*+=[o]--[F]\txt{Box}
\end{xy}\]
\end{document}
</pre></body></html>