How to disable the NSUndoManager in an NSDocument?

Question

I'm using NSDocument but I would like to disable the undo manager.

How can I do it?

By reading the documentation: https://developer.apple.com/library/ios/documentation/cocoa/Conceptual/UndoArchitecture/UndoArchitecture.html#//apple_ref/doc/uid/10000010i — cacau, Feb 27 '14 at 11:57

score 5 · Accepted Answer · answered Jan 07 '14 at 18:22

Return Value

YES if registration is enabled; otherwise, NO.

and:

Disables the recording of undo operations, whether by registerUndoWithTarget:selector:object: or by invocation-based undo.

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