U0101

U+0101 is the Unicode code point for the Latin small letter a with macron, represented as ā. Its uppercase counterpart is U+0100, LATIN CAPITAL LETTER A WITH MACRON. Both belong to the Latin Extended-A block, which spans from U+0100 to U+017F. The character is used in several languages to indicate a long or tense vowel quality.

In natural language usage, ā appears in Latvian, Māori transliteration, Hawaiian orthography, and other contexts that employ macrons to mark vowel length. It helps distinguish meaning in words where length can affect pronunciation and semantics.

Encoding and rendering details: In UTF-8, U+0101 is encoded as two bytes: 0xC4 0x81. In UTF-16, it is 0x0101. In HTML, the lowercase form can be represented by the named entity ā or the numeric reference ā. The uppercase form uses Ā or Ā. Rendering depends on font support; many fonts include the character, but some may lack it, requiring a font with extended Latin coverage.

U+0101 is a precomposed character, meaning it is a single code point rather than a base letter plus a combining macron. When processing text, normalization can convert precomposed forms to decomposed forms (a plus combining macron) if needed, but most modern systems preserve the single code point.

See also: U+0100 (LATIN CAPITAL LETTER A WITH MACRON), and related Latin letters with diacritics in the same block.