U+AA97 "ꪗ" Tai Viet Letter High Tho Unicode Character

U+AA97 "ꪗ" Tai Viet Letter High Tho is a specific character in the Tai Viet script, which is used to write several Tai languages including Tai Dam, Tai Dón, and Tai Daeng in Southeast Asia. This letter represents the sound of a high-register "th" consonant, following the traditional two-register system of the script where tones are determined by the consonant class. The character is encoded in the Unicode standard's Tai Viet block, which was added in version 5.2 to support the digital preservation and modern communication of these languages. Its distinctive shape and functional role are part of a careful typographic design that maintains readability while honoring the traditional calligraphic forms of Tai Viet writing.