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
QWERTY based partly on QWERTY and is claimed to be easier for an existing QWERTY typist to learn while offering several supposed optimisations. Most modern computer operating systems support these and other alternative mappings with appropriate special mode settings, with some modern operating systems allowing the user to map their keyboard in any way they like, but few keyboards are manufactured with keys labeled according to any other standard. Comparisons have been made, between Dvorak, Colemack, QWERTY, and other keyboard input systems, namely stenotype or its electronic implementations (e.g., Plover an opensource project ). However, stenotype is a fundamentally different system,