This bestselling book covers the newest features to OS 4.0 and the soon-to-be-released OS 5. Readers will also learn how to create applications for Palm OS using the newer tools, such as CodeWarrior 8.0, AppForge, and Flach.net DeveloperStudio. And they'll find expanded coverage on the enhanced Exchange Manager, which now offers wireless transmission with Bluetooth and SMS, in addition to infrared beaming between handhelds.