A Boolean value that indicates whether the recording of undo operations is enabled.
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@property(readonly, getter=isUndoRegistrationEnabled) BOOL undoRegistrationEnabled;
YES if registration is enabled; otherwise, NO.
The default is YES.
Disables the recording of undo operations, whether by registerUndoWithTarget:selector:object: or by invocation-based undo.
Enables the recording of undo operations.
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.