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CONCL

       SUBROUTINE  CONCL (Z1,ZE,Z2, MX,MY, NX,NY, NZ,BASE, PL2)
 C$    (Contour Array - Logarithmic)
 C$    Draw contours of  data stored in  an array.  Contour  lines
 C$    corresponding to  negative function  values will  be  drawn
 C$    with dashed lines,  and every fifth  contour will be  drawn
 C$    with a  heavy line  when the  plot device  can support  the
 C$    feature.  Contours  are  drawn  starting  at  Z  =  Z2  and
 C$    continuing  with  values  Z2/BASE,  Z2/BASE**2,  ...    The
 C$    arguments are:
 C$
 C$    (Z1,Z2)         Data range for the contouring.  Z1 is
 C$                    ignored,  but  is  included  to  ensure   a
 C$                    standard argument list.
 C$    (MX,MY)         Actual declared dimensions of ZE(*,*).
 C$    ZE(NX,NY)       Array containing data to be contoured.
 C$    NZ              Number of contours in the range (Z1,Z2),
 C$                    (NZ .GT. 0).
 C$    BASE            Logarithm base.
 C$    PL2             2-D pen movement routine, perhaps PL2CA.
 C$
 C$    (30-JAN-82)