SELF_MINFLUX

    Variable length array specifying the minimum flux density (in Jy/beam) to be
    considered in the Clean image for each loop of the self-calibration process.
    Note  that this is the brightness of a pixel, not the flux of a Clean compo-
    nent.

    This variable length array can be resized using the LET /RESIZE command. For
    example
        LET SELF_MINFLUX 0.001 0 0  /RESIZE
    will lead 3 self-calibration loops (if SELF_TIMES and SELF_NITER are also of
    size 3) selecting on regions brighter than 1mJy/beam in the first  one,  and
    all regions in the last 2 ones.