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PMKA4

       SUBROUTINE  PMKA4 (XARRAY,INCX,YARRAY,INCY,ZARRAY,INCZ,
      X                   HARRAY,INCH,N)
 C$    (Polymarker Absolute 4-D)
 C$    Beginning at the current point, draw markers at each of the
 C$    N   homogeneous   world   coordinate   points   stored   in
 C$    (XARRAY(*),YARRAY(*),ZARRAY(*),HARRAY(*)) in  turn,  ending
 C$    at the  N-th  point  which  will  become  the  new  current
 C$    position.  INCX, INCY, INCZ, and INCH are the displacements
 C$    between successive X,  Y, Z,  and H values  in the  arrays.
 C$    These will normally be all 1.  The marker used will be that
 C$    currently selected.  If an  increment INCX, INCY, INCZ,  or
 C$    INCH is negative, the starting vertex is taken as (1-N)*INC
 C$    + 1 instead of 1, so  that the array is stepped through  in
 C$    reverse order.
 C$    (02-APR-82)