Sets the string displayed in the receiver when the user isn’t pressing the mouse button.
Original signature is '- (void)setTitle:(NSString *)aString'
Available in Mac OS X v10.0 and later.


- aString (NSString)
- The string to display.

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