OS X El Capitan: The Missing Manual

Windows That Auto-Reopen

For decades, opening a program on the Mac presented exactly the same thing every time: a blank screen, or maybe a welcome screen. It was up to you to specify what document you then wanted to work on.

Now, though, whatever documents were open when you last quit that program magically reopen, ready for you to get back to work. Everything is exactly as it was, including your window and palette positions. Incredibly, any text that was highlighted when you last quit the program is still highlighted, and the insertion point is just where you left it.

This is all handy if you tend to work on the same documents day after day; the auto-reopened document serves as a refresher on what you were in the middle of doing. You can skip fussing with the Open command, remembering what you were doing, rearranging the windows the way you like them, and so on.

Then again, maybe you can’t stand this feature.

Fortunately, it’s easy to turn it off, either globally, on a per-program basis, or on a per-Quit basis.

• Turn off auto-reopen for good. Open System Preferences→General, and turn off “Restore windows when quitting and re-opening apps.”

• Prevent your current setup from being memorized. You can also prevent just one particular program from reopening its documents the next time—at the time you’re quitting it. To do that, press Option while you quit the program (for example, when you choose Safari→Quit or press ⌘-Q). The Quit command magically changes to say “Quit and Discard Windows.” ...