GCLEAN

            IMAGER\GCLEAN  [Gauss1  ...  GaussN]  [/FLUX  [Min  Max]]  [/RESTART
    [File]]

      is a short cut for
          LET METHOD = GAUSS
          CLEAN [Gauss1 ... GaussN] [/FLUX [Min Max]] [/RESTART [File]]

        Where Gauss1 to GaussN are the size scales of the Gaussian components in
    arcsecond.  If  not   specified,  these  size scales are taken from variable
    CLEAN_SCALES. Note that scale 0 (point source) is always  the  first  scale,
    even if not specified in the argument list.