[CLEAN\]UV_FILTER [/RESET] /VELOCITY V1 [... [Vn]] [/WIDTH Width
[TYPE]]
Specify around which velocities the line emission should be filtered.
Velocities 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 de-
fault width is the current channel width.