Q:   If I have a window delegate, which method should I use to close the window, the close: method or the performClose: method?
	
A:  The performClose: method should be used instead of close: because it sends a windowWillClose:  to its delegate, while the close: method doesn't.   See the documentation in the reference manual about the window class for more information about these two methods.

QA644

Valid for 1.0, 2.0, 3.0