PV

        SHOW PV [[CLEAN|DIRTY|SKY] Axis Offset]

    Extract from the indicated data cube a Position-Velocity image at the speci-
    fied Offset (in arcsec) along the specified Axis (X or Y), and display it.

    The data cube name is optional: the last specified one is used by default.

          SHOW PV

    will  simply  redisplay  (with  different  controls, see SHOW PV ? to have a
    list) the last extracted Position-Velocity image.