UV_FIELDS /FILE

        [CLEAN\]UV_FIELDS RaVar DecVar [Unit] [/CENTER Ra Dec] /FILE File

      Modify the specified File.uvt handling the UV table.

    If the option is not present, it would instead modify the current UV data in
    IMAGER.  However,  the  READ command prevents to load UV tables that require
    the action of the UV_FIELDS command, so in practice, the  /FILE  option  be-
    comes mandatory.