Many users, one Mac. (Secrets: Mac OS X).

Unlike earlier versions of Mac OS, OS X was designed to be a multiple-user environment. Even if you're the only person who uses your OS X machine, you can benefit from the extra security a user account provides. More significantly, if you're not your Mac's only user, having multiple user accounts gives you flexibility and security not possible before.

May I Have Your Permission?

The first step in understanding user accounts is understanding permissions. If you've used OS 9's File Sharing or Multiple Users, you're probably familiar with the concept, but OS X introduces ...

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