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SETDP

       SUBROUTINE  SETDP (FRONT,BACK)
 C$    (Set View Depth)
 C$    Set the front and back distances of the viewing pyramid  in
 C$    world coordinate space to (FRONT,BACK).  These are measured
 C$    from the view reference point along the view plane  normal,
 C$    and if depth  clipping is enabled,  these define the  front
 C$    and back clipping  planes.  "FRONT"  must be  less than  or
 C$    equal to "BACK".
 C$    (02-FEB-82)