U+AA31 CHAM VOWEL SIGN AU

The Unicode character U+AA31, officially named CHAM VOWEL SIGN AU, was introduced in Unicode version 5.1. It is part of the Cham block, which belongs to the Basic Multilingual plane.

Categorized technically as a Nonspacing Mark, this character typically falls under the Cham script. In terms of text layout and rendering, the glyph is not a composition and has no designated width in East Asian typography. When placed in bidirectional text, it behaves as an Unknown character. Its visual representation remains not mirrored regardless of the reading direction.