[CLEAN\]UV_BASELINE /FREQUENCY F1 [... [Fn]] /WIDTH Width [TYPE]
Specify the full width of the window around every frequency given in the
/FREQUENCY option. 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. The default width is the current channel width.