Abbreviation for Apple Advanced Typography.
A collection of characters with no reference to their encoded representation (for example, “the English alphabet”).
A diacritical mark, usually modifying the sound of a vowel or indicating that a syllable has stress applied to it.
The process of adjusting multiple diacritical marks applied to the same base character so that they don't collide with each other.
A letter with one or more accents or other diacritical marks applied to it.
Chinese characters that are used in place of the “normal” Chinese numerals for accounting and commercial purposes, generally because they're more difficult to alter.