ParaType fonts are based on standard (Windows and Mac OS) and additional (ParaType) code pages. A code page (encoding) defines layout of characters in a font. Every encoding contains letters of several similar alphabets. Thus, Western encoding supports languages of Western Europe, Central European encoding supports languages of East and Central Europe, Turkish encoding supports languages of Westen Europe and Turkish language, Cyrillic Standard encoding supports languages based on Cyrillic alphabet and so on. All referenced encodings support English alphabet.