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INQVC

       SUBROUTINE  INQVC (WCLPON,FCLPON,BCLPON,RHWCS)
 C$    (Inquire Viewing Control Parameters)
 C$    Return  the   values  of   the  current   viewing   control
 C$    parameters, as follows:
 C$
 C$    WCLPON..... .TRUE. - window clipping on.
 C$               .FALSE. - window clipping off.
 C$    FCLPON..... .TRUE. - front clipping on.
 C$               .FALSE. - front clipping off.
 C$    BCLPON..... .TRUE. - back clipping on.
 C$               .false. - back clipping off.
 C$    RHWCS...... .TRUE. - right-handed world coordinate system.
 C$               .FALSE. - left-handed world coordinate system.
 C$    (01-APR-82)