For the More Curious: NSUserDefaultsController
Sometimes you will want to bind to a value from the NSUserDefaults object. An NSUserDefaultsController makes this possible. All the NIBs in your application will use a single shared instance of NSUserDefaultsController.
For example, if you wanted to use bindings
to deal with SpeakLine’s text field,
you would bind it to the shared NSUserDefaultsController
with a Controller Key of values
and a Model Key Path
of activeTextKey
(Figure 14.3).
Figure 14.3 Binding to the NSUserDefaultsController
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