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<td><font face="Times">NSNotification objects contain notification information communicated from an object to that object's observers. The NSNotification cluster's single public class, NSNotification, declares the programmatic interface for notifications.</font>

<p><font face="Times">The objects you create using this class are referred to as <i>notification objects</i> (or simply, <i>notifications</i>). They are immutable objects. Because of the nature of class c