screen: Writelock

 
 8.4.9 Writelock
 ---------------
 
  -- Command: writelock ON|OFF|AUTO
      (none)
      In addition to access control lists, not all users may be able to
      write to the same window at once.  Per default, writelock is in
      'auto' mode and grants exclusive input permission to the user who
      is the first to switch to the particular window.  When he leaves
      the window, other users may obtain the writelock (automatically).
      The writelock of the current window is disabled by the command
      'writelock off'.  If the user issues the command 'writelock on' he
      keeps the exclusive write permission while switching to other
      windows.
 
  -- Command: defwritelock ON|OFF|AUTO
      (none)
      Sets the default writelock behavior for new windows.  Initially all
      windows will be created with no writelocks.