QWERTY official languages of the European Union (excluding Bulgarian and Greek). Some letters, like Ł/ł needed for Slavic languages, are accessed by a special "overstrike" key combination acting like a dead key. However, the Romanian letters Ș/ș and Ț/ț (S/s and T/t with comma below) are not supported; the presumption is that Ş/ş and Ţ/ţ (with cedilla) suffice as surrogates. The Icelandic keyboard layout is different from the standard QWERTY keyboard because the Icelandic alphabet has some special letters, most of which it shares with the other Nordic countries: Þ/þ, Ð/ð, Æ/æ, and Ö/ö. (Æ/æ also occurs in Norwegian, Danish and
Dvorak Simplified Keyboard increase, since thinking speed is a much larger factor than writing speed. This would contrast with a verbatim transcription, which would rely much more heavily on keyboard layout for efficiency. Although the Dvorak design is the only other keyboard design registered with ANSI and is provided with all major operating systems, attempts to convert universally to the Dvorak design have not succeeded. The failure of the Dvorak pattern to displace the QWERTY pattern has been the subject of some studies. A discussion of the Dvorak pattern is sometimes used as an exercise by management consultants to illustrate the difficulties of