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.