MAP_COMPRESS Output

        [CLEAN\]MAP_COMPRESS WhichOne Nc [First TYPE] [Output]

    Output is a string indicating where the results will be placed.  It can be
        - Any SIC Image Variable that is not a built-in buffer in IMAGER
          The variable must exist and be of adequate size.
        - A file name. The command will write the result as a GILDAS data file
          with this name.
    The distinction between SIC Image Variable and Filenames  is  based  on  the
    presence  of  a  dot (".") or semi-colon (":") that indicate that the string
    refers to a filename.

    Output is compulsory unless WhichOne referes to one of the allowed  built-in
    buffer  names  (DIRTY,  CLEAN  or SKY) and forbidden if WhichOne is *.  When
    Output is not present, the result are written  in  place  on  the  specified
    buffers.