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IE7 Open Last Closed Tab is a plug-in for Internet Explorer 7 that makes "Alt-X" reopen the last closed tab. This is very useful when you accidentally close a tab that you didn't mean to close. Instead of trying to find it in your browser history, you hit "Alt-X" and it automatically reopens in a new tab. It also supports a Quick Tab Style View, shown when you hit "Alt-Q", which gives you thumbnails of the previous tabs you've closed (like the built-in IE Quick Tabs, but for previously closed tabs). You can then click on the thumbnail of the page you want to open in a new tab.