1 2 3 4 5 6 7 8 9 10 11 12 13 14
\documentclass{ppex} \nonstopmode \usepackage [all,2cell]{xy} \pagestyle{empty} \setlength\textwidth{183.0pt} \begin{document} \ResetPreambleCommands \ReadyForTheFray \usepackage [all,2cell]{xy} \UseTwocells \[ \xymatrix{L\rtwocell^u_d & R} \] \end{document}