SET FORMAT

        [DISPLAY\]SET FORMAT DataFormat [Specifier]

    List or specify the default data format for the WRITE command.  Allowed val-
    ues  are  FITS  or GILDAS.  For FITS format, the additional Specifier can be
    NATIVE, VELOCITY or FREQUENCY to indicate the unit of the spectral axis. The
    default is NATIVE, namely taking the current  spectral  axis  type,  if  not
    specified.

    The data format can be overidden by arguments of the command WRITE.