by Tom Nelson
Safari has long had an undo feature, letting you recover from accidental mistakes, such as entry errors and general typing mistakes. But ever since Safari 5 and OS X Lion, the undo feature has grown to include the ability to reopen tabs and windows that you accidentally closed.
Screen shot © Coyote Moon, Inc.
Restore Closed Tabs
If you’ve ever been working in Safari with multiple tabs open, perhaps researching a problem, then you know the sheer agony of accidentally closing one of the tabs.