U+00C4 LATIN CAPITAL LETTER A WITH DIAERESIS

The Unicode character U+00C4, officially named LATIN CAPITAL LETTER A WITH DIAERESIS, was introduced in Unicode version 1.1. It is part of the Latin 1 Sup block, which belongs to the Basic Multilingual plane. Previously, it was also referred to as LATIN CAPITAL LETTER A DIAERESIS.

Categorized technically as a Uppercase Letter, this character typically falls under the Latin script. In terms of text layout and rendering, the glyph is a canonical composition and has no designated width in East Asian typography. When placed in bidirectional text, it behaves as an Left-To-Right character. Its visual representation remains not mirrored regardless of the reading direction.