Variables:

###
Variables:

                SHOW Image  control variables

        The following variables control the SHOW display.
          Display the header     DO_HEADER   [ YES ]
          Display a color wedge  DO_WEDGE    [ YES ]
          Plot bitmaps           DO_BIT      [ YES ]
          Add the clean beam     DO_NICE     [ NO ]
          Add the UV coverage    DO_COVERAGE [ NO ]
          Add the dirty beam     DO_DIRTY    [ NO ]
          Display the labels     DO_LABEL    [ YES ]
          Display contour levels DO_CONTOUR  [ YES ]
          grey-scale contours    DO_GREY     [ NO ]
          Better marks           DO_MASK     [ NO ]           (Hide image behind cha

          Channel range          RANGE       [ 0 0 ]         in 3rd axis unit, (0,0)
          Channel label          MARK        [ velocity ]    [VELOCITY, FREQUENCY or
          Displayed field size   SIZE        [ 0 0 ]         in ANGLE_UNIT
          Field center           CENTER      [ 0 0 ]         offset in ANGLE_UNIT
          Cross size at center   CROSS       [ 2 ]           in arcsec, 0 ==> none
          Fields layout          DO_FIELDS   [ NO ]          (for Mosaics)

          Colour Scale range     SCALE       [ 0 0 ]         (0,0) ==> all dynamic
          Contour levels         SPACING     [ 0 Units]      (0) =+> Guess
          Spacing type           SPACE_TYPE  [ AUTO]  [LIN, LOG or USER]
          Side Display           SHOW_SIDE  [ NO ]