setdefaultlanguage sets and saves the internal LANGUAGE value. setdefaultlanguage(language) language a string, can have following values: 'fr', 'en', 'ru_RU', 'zh_TW', ... setdefaultlanguage(language) changes current language and saves this value in Scilab. You have to restart Scilab, if you want to use menus. setdefaultlanguage('') resets language to the system value. setdefaultlanguage is used only Windows. On others operating systems it returns always %f. getlanguage setlanguage