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<H1>MFNSetOptionsPrefix</H1>
Sets the prefix used for searching for all <A HREF="../MFN/MFN.html#MFN">MFN</A> options in the database. 
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcmfn.h" 
PetscErrorCode <A HREF="../MFN/MFNSetOptionsPrefix.html#MFNSetOptionsPrefix">MFNSetOptionsPrefix</A>(<A