Sets the receiver to use only required ligatures when setting text, for the glyphs in the selection if the receiver is a rich text view, or for all glyphs if it’s a plain text view.
Original signature is '- (void)turnOffLigatures:(id)sender'
Available in Mac OS X v10.0 and later.


- sender (Id)
- The control that sent the message; may be nil.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)