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VARIABLE

        [MRTCAL\]VARIABLE [*|What [READ|WRITE]]

    Create  one  or  all the Sic structures mapping the Mrtcal internal buf-
    fers, namely:
      - IMBF%PRIM, IMBF%SCAN, IMBF%FRONT, IMBF%BACK, IMBF%DEROT map the FITS
        HDUs for the scan,
      - SUBS%BACKDATA,  SUBS%ANTSLOW, SUBS%ANTFAST map the FITS HDUs for one
        subscan,
      - IMBDATA%TIME and IMBDATA%IMBF% describe a portion of data of the DA-
        TA table,
      - MHEAD%KEY,  MHEAD%PRI, MHEAD%CAL map the sections of the index entry
        which was read.
    Default is *, i.e. the 4 structures will be created, but only one struc-
    ture can be created with one of the keywords IMBF, SUBS, IMBDATA, MHEAD.

    The  structures  can  be  created read-only (keyword READ) or read-write
    (keyword WRITE) for further update with the commands MUPDATE/MWRITE. De-
    fault is read-only.

    Note  that these variables are not updated when the buffers are changed.
    For safety they should be updated by recalling the command.


Gildas manager 2023-06-01