I recently hit some button on my keyboard that shrank down all the open program windows and returned them to normal when I clicked one. If it felt as if you suddenly got an overhead view of all the open windows and programs on your Mac’s desktop, you have stumbled upon the Mission Control feature. You may also see a Mission Control in the Mac’s dock; it features three colored squares on a black background. To learn more about using the feature, go to the Mac’s Help menu in the main toolbar, enter “Mission Control” in the search box and press the Enter key. You can change the way Mission Control behaves in the Mac’s System Preferences.

Source: New York Times April 17, 2017 15:56 UTC