Enables the automatic flushing of output when you send the
    interrupt character.
    o  Enabled - The data in the data buffer remains visible until
       the buffer is empty.
    o  Disabled - The data buffer is emptied and the display is
       terminated. This provides fast system response to the
       interrupt character.
    Default: ENABLE AUTOFLUSH
    DCL Format
      ENABLE AUTOFLUSH
    UNIX Format
      toggle autoflush