screen: Message Wait

 
 17.4 Message Wait
 =================
 
  -- Command: msgminwait sec
      (none)
      Defines the time 'screen' delays a new message when another is
      currently displayed.  Defaults to 1 second.
 
  -- Command: msgwait sec
      (none)
      Defines the time a message is displayed, if 'screen' is not
      disturbed by other activity.  Defaults to 5 seconds.