ection
provides details of the Fortran 90 code that must be added.

<P>When building the Zoltan library, use the file 
<I>fort/zoltan_user_data.f90</I> for <I>zoltan_user_data.f90</I>.
This assumes that DATA in a
call to <B><A HREF="ug_interface_init.html#Zoltan_Set_Fn">ZOLTAN_SET_FN</A></B>
is either omitted (you can omit arguments that are labeled OPTIONAL in
the Fortran API) or an array of type INTEGER, REAL or DOUBLE PRECISION
(REAL*4 and REAL*8 might be acceptable). If a more complicated set of data
is