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SYMCG3

       SUBROUTINE  SYMCG3 (XYGRID,PL3D)
 C$    (Hershey Character Generator)
 C$    Generate a  Hershey character  at the  current point.   The
 C$    arguments are:
 C$
 C$    XYGRID(*)...Height range, width range, and pairs of (X,Y)
 C$                coordinates.  Height range = (XYGRID(1),XYGRID(2),
 C$                XYGRID(3)).  Width range = (XYGRID(4),XYGRID(5)).
 C$                (X,Y) = (XYGRID(K),XYGRID(K+1)) (K=6,8,...).
 C$    PL3D........3-D pen movement routine, usually PL3CA.
 C$
 C$    A coordinate pair (-64,0) requests a pen raise, and a  pair
 C$    (-64,-64) terminates the  coordinate list.   It is  assumed
 C$    that movement to the first coordinate position will be done
 C$    with the  pen  raised  - no  raise  command  is  explicitly
 C$    included to do this.
 C$    (02-APR-82)