UV_BASELINE

        [CLEAN\]UV_BASELINE [Degree] [/CHANNELS Channel_List]
      [/FREQUENCY List Of Frequencies] [/RANGE Min Max [TYPE]]
      [/VELOCITY List of Velocities] [/WIDTH Width [TYPE]]
      [/FILE FileIn [FileOut]]

    Subtract a continuum from a line UV data set, by  fitting   a  baseline  for
    each  visibility.  The channels to be ignored in this process (i.e. the ones
    including the line emission) can be specified either by  the  /FREQUENCY  or
    /VELOCITY  options  in  combination  with the /WIDTH option, or by a channel
    list with /CHANNELS or a range (of channels, frequencies or velocities) with
    /RANGE.

    By default, the command works on the current  UV  data,  unless  the  option
    /FILE is specified.

    With  no  options  (or  with only /FILE), the command behaves as UV_BASELINE
    /CHANNELS PreviewChannels. See UV_PREVIEW for details.