Apple Wireless Keyboard the initial release. The new model now uses only two AA batteries instead of three originally. Additionally, Mac OS X 10.5.8 is now the minimum OS over the original Mac OS X 10.4.10. This model of keyboard became standard with new generation of iMacs introduced on the same day. On July 20, 2011, following the release of Mac OS X 10.7/OS X Lion, Apple updated the keyboard slightly, updating the label on the Exposé key to Mission Control and changing the Dashboard key to a Launchpad key. Keyboard layouts with a rectangular Enter key are available in American English and
Dvorak Simplified Keyboard layouts for English such as Colemak, but also for other languages such as the German Neo and the French BÉPO. Over the decades, symbol keys were shifted around the keyboard resulting in variations of the Dvorak design. During 1982, the American National Standards Institute (ANSI) implemented a standard for the Dvorak layout known as ANSI X4.22-1983. This standard gave the Dvorak pattern official recognition as an alternative to the QWERTY keyboard. The pattern standardized by the ANSI differs from the original or "classic" pattern devised and promulgated by Dvorak. Indeed, the pattern promulgated publicly by Dvorak differed slightly from the