U+1A7A "᩺" Tai Tham Sign Ra Haam Unicode Character

U+1A7A "᩺" Tai Tham Sign Ra Haam is a diacritical mark used in the Tai Tham script, which historically writes the Tai Yuan, Tai Lue, and Khün languages of Southeast Asia. This sign functions as a vowel shortening or length marker, indicating that a following vowel sound should be articulated as short rather than long, and it is typically placed above or attached to a consonant to modify its phonetic value. In the Tai Tham writing system, Ra Haam plays a specific role in accurately representing the tonal and vowel distinctions of the spoken languages, preserving the orthographic traditions of Buddhist manuscripts and modern digital texts.