Usage: FORMAT RECORDER_HEAD <format description>
  Controls how the header line of a message item appears when using
  the PLAY command.

  Valid format characters:
       D          Date and time stamp
       F          Nick of person who sent the message
       M          The message text
       N          The message number

See Also:  
  AWAY
  ERASE
  FORMAT RECORDER_BODY
  PLAY
  SET AWAY_RECORDER
