Editing QWERTY (section)

===Diacritical marks===
QWERTY was designed for [[English language|English]], a language with accents ('[[diacritic]]s') appearing only in a few words of foreign origin.  The standard US keyboard has no provision for these at all; the need was later met by the so-called "[[#US-international|US-International]]" [[keyboard mapping]], which uses "[[dead key]]s" to type accents without having to add more physical keys. (The same principle is used in the standard US keyboard layout for [[macOS]], but in a different way). Most European (including UK) keyboards for PCs have an {{keypress|[[AltGr]]}} key ('Alternative Graphics' key,{{efn|Where this key is not provided, some layouts provide its equivalent using {{keypress|ctrl|alt}}+the letter to be accented, which can mean some [[Chorded keyboard|chord]]s that require additional manual dexterity.}} replaces the right Alt key) that enables easy access to the most common diacritics used in the territory where sold. For example, default keyboard mapping for the UK/Ireland keyboard has the diacritics used in [[Irish language|Irish]] but these are rarely printed on the keys; but to type the accents used in [[Welsh language|Welsh]] and [[Scots Gaelic]] requires the use of a "[[#United Kingdom (Extended) Layout|UK Extended]]" keyboard mapping and the dead key or [[compose key]] method. This arrangement applies to Windows, [[ChromeOS]] and [[Linux]]; macOS computers have different techniques. The US International and UK Extended mappings provide many of the diacritics needed for students of other European languages.