UV_FLAG /FILE

        [CLEAN\]UV_FLAG /FILE FileIn [FileOut] [/ANTENNA Iant] [/DATE ...]
      [/RESET]

    Flag  data  found in FileIn, and store the result in FileOut, or in place if
    FileOut is not specified.  Note that the UV_FLAG command has no  memory:  it
    caannot  restore  the  flagging to a previous state, but only flag or unflag
    from the current flag state.