Mission Control, formerly Exposé, is a feature of the OS X operating system. First previewed on June 23, 2003 at the Apple Worldwide Developers Conference as a feature of the then forthcoming Mac OS X v10.3, Mission Control allows a user to quickly locate an open window, quickly hide all windows and show the desktop, and to manage windows across multiple monitors or virtual desktops. Exposé was renamed Mission Control in 2011 with the release of OS X Lion.