U+16D63 "𖵣" Kirat Rai Vowel Sign Aa Unicode Character

U+16D63 "𖵣" Kirat Rai Vowel Sign Aa is a combining diacritical mark used in the Kirat Rai script, which is employed to write the Kirat Rai languages spoken primarily in Nepal, Bhutan, and parts of India. This specific vowel sign represents the long 'aa' vowel sound and is placed above or attached to a consonant character to modify its inherent vowel, thereby extending the pronunciation of the preceding consonant. Its inclusion in the Unicode Standard, under the Kirat Rai block added in version 16.0, supports the digital preservation and modern typography of this indigenous script, which has historically been transmitted through oral tradition and manuscript culture.