[daip] Flagging based on UV position.

[landon at inaoep.mx]

Hello,

Does AIPS have any tools to flag based on a visibility's position in the UV
plane, or based on UV distance? I am sure UVFLG and TVFLG don't have this
ability, possibly EDITR does (in which case I will need to update the version of
AIPS I'm using). 

Thanks again,
-Landon Halloran