SG_TABLE /ADD

        CLIC\SG_TABLE Name [OLD|NEW] /ADD Item [Item [...]]

    Add some more information columns.  Possible items are

     U V W DATE TIME IANT JANT
     which  are in principle already present in elements 1 to 7 of the visi-
    bilities.

     L_PHASE_OFF M_PHASE_OFF X_POINT_OFF  Y_POINT_OFF
     which indicate the Phase and Pointing offsets (e.g. for mosaics)

     ELEVATION HOUR_ANGLE PARA_ANGLE
     which can be useful for full polarization measurements

     SCAN ON_TIME WEIGHT
     for bookkeeping

     X_POINT_IANT Y_POINT_IANT X_POINT_JANT Y_POINTJANT
     the antenna pointing errors (used mostly for simulations...)

     RA  DEC  FREQUENCY
     the Source coordinates and Observing frequency (in Real*8, used for
     multisource UV tables, still very experimental)

     STOKES is also a recognized item, but it is handled by  the  /POLARIZA-
    TION option