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 through the key. On Macintosh computers, the "Norwegian" and "Norwegian extended" keyboard layouts have a slightly different placement for some of the symbols obtained with the help of the or keys. Notably, the "$" sign is accessed with and "¢" with . Furthermore, the frequently used "@" is placed between and . Most typewriters use a QWERTZ keyboard with Polish letters (with diacritical marks) accessed directly (officially approved as "Typist's keyboard", , Polish Standard PN-87), which is mainly ignored in Poland as impractical (except custom-made, e.g., in public sector and some Apple computers); the "Polish programmer's" () layout has become