Scheherazade and Lateef are extended Arabic script fonts designed by SIL International for modern Unicode-based systems using either OpenType or AAT (Apple Advanced Typography) for complex-script rendering. They support virtually all of the Unicode 4.1 Arabic character repertoire (excluding the Arabic Presentation Forms blocks, which are not recommended for normal use). Each typeface is currently available in Regular weight only. Scheherazade, named after the heroine of the classic Arabian Nights tale, is designed in a similar style to traditional typefaces such as Monotype Naskh, extended to cover the full Unicode Arabic repertoire. Lateef is named after Shah Abdul Lateef Bhitai, the famous Sindhi mystic and poet. It is intended to be an appropriate style for use in Sindhi and other languages of the South Asian region.