Keyboard layout are named after the first several letters that take over the 'QWERTY' row on the Latin keyboard. They differ by where a few of the letters are placed. For example, some have Cyrillic 'B' (which is pronounced 'V') on the Latin 'W' key (after the German transliteration of B), while others have it on the Latin 'V' key. The images of AATSEEL "Student", YaZhERT (яжерт) and YaWERT (яверт) are shown on this page. There are also variations within these variations; for example the Mac OS X Phonetic Russian layout is YaShERT but differs in placement of ж and э. Windows
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,