1C*PGVPORT -- non-standard alias for PGSVP
2C+
3      SUBROUTINE PGVPORT (XLEFT, XRIGHT, YBOT, YTOP)
4      REAL XLEFT, XRIGHT, YBOT, YTOP
5C
6C See description of PGSVP.
7C--
8      CALL PGSVP (XLEFT, XRIGHT, YBOT, YTOP)
9      END
10