U0301

U+0301 is the Unicode code point designated as the COMBINING ACUTE ACCENT. It is a combining diacritical mark that sits in the range U+0300 to U+036F and is classified as a non-spacing mark (category Mn). As a combining mark, it does not produce a character on its own but modifies the preceding base character in text rendering.

Usage of the combining acute accent involves following a base letter with the mark to form accented characters. For example, the sequence consisting of the Latin small letter a (U+0061) followed by U+0301 renders as á in rendering environments that support combining marks. Many languages also have precomposed forms (such as U+00E1 for á), but the combining form remains useful for dynamic text generation, phonetic transcription, and cases where a precomposed character does not exist.

In Unicode normalization, U+0301 participates in both decomposition and composition. Under NFD (Normalization Form D), characters may be decomposed into a base letter plus U+0301. Under NFC (Normalization Form C), compatible sequences may be recomposed into precomposed characters when available (for example, U+00E1).

Rendering and typography of U+0301 depend on font support and the rendering engine. While the acute accent is generally placed above the preceding character, its exact positioning can vary with the base letter and typeface used.

See also: Unicode, combining diacritical marks, normalization forms.