U+1A71 "ᩱ" Tai Tham Vowel Sign Ai Unicode Character

U+1A71 "ᩱ" Tai Tham Vowel Sign Ai is a combining diacritical mark used in the Tai Tham script, which is traditionally employed for writing languages such as Northern Thai, Tai Lue, and Khün. This vowel sign is placed above a consonant to represent the diphthong sound "ai" and is an essential component of the script's complex orthographic system, where vowels can appear above, below, or beside consonants. The character belongs to the Tai Tham block of the Unicode standard, which was introduced to preserve and digitally represent this historic and culturally significant script of Southeast Asia.