<table border="0" cellspacing="0" width="100%"><tr><td width="20%">[[An Overview of the Objective-C Foundation Framework|Previous]]<td align="center">[[Objective-C 2.0 Essentials|Table of Contents]]<td width="20%" align="right">[[Understanding Objective-C Number Objects|Next]]</td><tr><td width="20%">An Overview of the Objective-C Foundation Framework<td align="center"><td width="20%" align="right">Understanding Objective-C Number Objects</td></table><hr>