Many scripts in Unicode, including Arabic and Devanāgarī, have special orthographic rules that require certain combinations of letterforms to be combined into special ligature forms.. In English, the common ampersand (&) developed from a ligature in which the handwritten Latin letters e and t (spelling et, Latin for and) were combined. The rules governing ligature formation in Arabic …

Specials is a short Unicode block of characters allocated at the very end of the Basic Multilingual Plane, at U+FFF0–FFFF.Of these 16 code points, five have been assigned since Unicode 3.0: U+FFF9 INTERLINEAR ANNOTATION ANCHOR, marks start of annotated text; U+FFFA INTERLINEAR ANNOTATION SEPARATOR, marks start of annotating character(s); U+FFFB …