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GRFCX

       SUBROUTINE  GRFCX (N,NTHICK,PL2)
 C$    (Coordinate Axes)
 C$    Draw N intersecting  axes dividing each  of the  coordinate
 C$    ranges into N-1 pieces.  N  should normally be chosen  odd.
 C$    Every NTHICK-th line will be drawn thicker.  NTHICK .LE.  0
 C$    suppresses this  option.   PL2  is  the  2-D  pen  movement
 C$    subroutine.
 C$    (31-JAN-82)