\begin{xy}
% \xyShowAllMarkedPoints{}{\Fname}{\grExt}%
 \xyWARMprocessMoEPS{\Fname}{\grExt}
 \xyMarkedImport{\Fname}
 \xyMarkedPos{x}*++!U{x}
 \xyMarkedPos{y}*++!L{y}
\end{xy}