Keyboard layout based on the Wijesekara typewriter for Sinhala script. The Chinese National Standard on Tibetan Keyboard Layout standardises a layout for the Tibetan language in China. The first version of Microsoft Windows to support the Tibetan keyboard layout is MS Windows Vista. The layout has been available in Linux since September 2007. Mac OS-X introduced Tibetan Unicode support with OS-X version 10.5 and later, now with three different keyboard layouts available: Tibetan-Wylie, Tibetan QWERTY and Tibetan-Otani. The Bhutanese Standard for a Dzongkha keyboard layout standardizes the layout for typing Dzongkha, and other languages using the Tibetan script, in Bhutan. This standard
Portuguese keyboard layout are specified in the ABNT NBR ("Norma Brasileira Regulamentadora") 10346 variant 2 (alphanumeric) and NBR 10347 (numeric portion) standards. Portuguese keyboard layout There are two QWERTY-based keyboard layouts used for the Portuguese language. Additionally, there are two variants of the Dvorak Simplified Keyboard designed for Brazilian Portuguese. Typewriters in Portuguese-speaking countries generally have a separate extra key for "Ç", and a dead key for each diacritic except the cedilla; so that "Á" is obtained by typing first the acute accent, then the letter "A". The same thing happens with computer keyboards, except when using an "English – International" keyboard layout,