Dvorak Simplified Keyboard closed out. Apple also includes a Dvorak variant they call "Dvorak – Qwerty ⌘". With this layout, the keyboard temporarily becomes QWERTY when the Command (⌘/Apple) key is held down. By keeping familiar keyboard shortcuts like "close" or "copy" on the same keys as ordinary QWERTY, this lets some people use their well-practiced muscle memory and may make the transition easier. Mac OS and subsequently Mac OS X allow additional "on-the-fly" switching between layouts: a menu-bar icon (by default, a national flag that matches the current language, a 'DV' represents Dvorak and a 'DQ' represents Dvorak – Qwerty ⌘) brings
Keyboard layout rest, thus having 70% of typing done in the home row (compared to 32% in QWERTY). The Dvorak Simplified Keyboard is available out-of-the-box on most operating systems, making switching through software very easy. "Hardwired" Dvorak keyboards are also available, though only from specialized hardware companies. The Colemak layout is another popular alternative to the standard QWERTY layout, offering a more familiar change for users already accustomed to the standard layout. It builds upon the QWERTY layout as a base, changing the positions of 17 keys while retaining the QWERTY positions of most non-alphabetic characters and many popular keyboard shortcuts, supposedly