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Mac OS by Paul McFedries

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7. Installing and Using Mac OS X Applications

Understanding Mac OS X Application Types

Although you’re free to spend your time in Mac OS X tweaking system preferences and fiddling with files, I assume you’ve got more productive, creative, or fun things to do. In Mac OS X, this means launching applications that enable you to work, create, or play.

You might think that an application is an application, but that’s not the case under Mac OS X. In fact, your Mac can run five different types of applications:

Cocoa applications—These applications are written using the Cocoa programming architecture, which means they take full advantage of the advanced features that Mac OS X provides. Most new Mac OS X applications are based on Cocoa, and many applications ...

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