screen: Multiuser

 
 8.4.1 Multiuser
 ---------------
 
  -- Command: multiuser STATE
      (none)
      Switch between single-user and multi-user mode.  Standard screen
      operation is single-user.  In multi-user mode the commands
      'acladd', 'aclchg' and 'acldel' can be used to enable (and disable)
      other users accessing this 'screen'.