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Chapter 7. Working with Mac OS 9, the Cl... > Understanding Mac OS 9.2, the Classi...

Understanding Mac OS 9.2, the Classic Environment, and Classic Applications

As you have learned throughout this book, Mac OS X was an entirely new operating system rather than an evolution of Mac OS 9. As such, applications created for previous versions of the Mac OS won't work under Mac OS X—well, not directly anyway. Rather than forcing you to either obtain a Mac OS X–compatible version of all the applications you use (which might or might not be available) or to go without, Apple includes the Classic environment in Mac OS X. As you learned in Chapter 1, “Mac OS X: Foundations,” and Chapter 6, “Installing and Using Mac OS X Applications,” the Classic environment enables you to run Classic versions of applications.

NOTE

A Classic application is one that was created for Mac OS 9.2 or earlier versions of the Mac OS.



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