UV_FILTER /VELOCITY

        [CLEAN\]UV_FILTER [/RESET] /VELOCITY V1 [... [Vn]] [/WIDTH Width [TYPE]]

    Specify  around  which velocities the line emission should be filtered.  Ve-
    locities V1 to Vn must be in km/s. The full width of  the  filtering  window
    around  every  frequency can be set by option /WIDTH.  The optional argument
    TYPE indicates the type of width: FREQUENCY (in MHz), VELOCITY (in km/s)  or
    CHANNEL  (no  unit),  the default being FREQUENCY.  The default width is the
    current channel width.