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PLTFM

       SUBROUTINE  PLTFM (X,Y,R,PL2)
 C$    (Fiducial Mark)
 C$    Draw a fiducial mark  (i.e. a plus sign)  at a point.   The
 C$    arguments are:
 C$
 C$    (X,Y).....Center of mark on the unit square.
 C$    R.........Radius of mark.
 C$    PL2.......2-D pen movement subroutine, usually PL2CA.
 C$    (09-APR-82)