4 Sams Teach Yourself Mac OS X Lion App Development in 24 Hours 12. Working with User Defaults This hour shows you how (and when) you can read and write data that is stored alongside your application as user-specific application preferences. 13. Working with Core Data This hour shows you the power of Core Data, a framework that enables your application to store, retrieve, and query relational data in XML, binary, and SQLite. 14. Working with Documents, Versions, and Autosave This hour extends your knowledge of data binding, collections, and Core Data to show you how to build document-oriented applications and utilize some new Lion features such as versioning and autosave. 15. Working with Apple's iCloud This hour shows you how to extend your knowledge of document-oriented applications to