Oriya Vowel Sign Au

Oriya Vowel Sign Au at U+0B4C is a dependent vowel mark that changes a consonant’s inherent vowel to the diphthong au in Odia-script text. It is encoded in the Oriya Unicode block as a combining spacing mark, so it is written with a base consonant rather than used as an independent letter. In Odia, this sign is used for syllables such as କୌ, read kau, and ଗୌ, read gau, in ordinary words, names, educational materials, dictionaries, and digital communication. It represents the same vowel sound as the independent Oriya letter ଔ when that vowel begins a syllable, but U+0B4C is the form attached to a preceding consonant. The mark is also relevant in texts using the Odia script for related languages and transliteration traditions, where the spelling system follows Odia vowel-sign behavior. A practical point is that it may appear visually as parts placed around the consonant, but it is still one vowel sign in encoded text; separating or reordering its visible pieces can break searching, editing, and correct rendering.