The C key may be used to insert CONTROL  privilege  into  the  current
 privilege mask.

 CONTROL privilege will be cleared from the other  privilege  masks  in
 the current ACL entry.

 CONTROL privilege is required to view and modify  the  access  control
 list of a dictionary directory, object or sub-dictionary directory.

 To display help on another key, press that key.
 To return to editing, press the space bar.