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iPhone Programming: The Big Nerd Ranch Guide by Joe Conway, Aaron Hillegass

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14. Saving, Loading and Multitasking

On iPhone OS, every application has its own application sandbox. An application sandbox is a directory on the filesystem that is barricaded from the rest of the filesystem. Your application must stay in its sandbox, and no other application can access its sandbox.

Application Sandbox

Figure 14.1. Application sandbox

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The application sandbox has a number of directories, and each of them has a different use.

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