U+115B5 "𑖵" Siddham Vowel Sign Vocalic Rr Unicode Character

U+115B5 "𑖵" Siddham Vowel Sign Vocalic Rr is a combining diacritical mark used in the Siddham script, an ancient writing system historically employed for writing Sanskrit and Buddhist texts in East Asia, particularly in Japan. This character indicates a specific vowel sound, a vocalic "rr" (a syllabic r with a long r-colored vowel), which is a feature derived from Sanskrit phonetics where certain consonants can function as vowels. As a vowel sign, it modifies a base consonant character by attaching visually to it, aligning with Siddham's complex orthographic rules. It is part of the Siddham block in Unicode, reflecting efforts to preserve and digitally represent historical scripts for scholarly and cultural purposes.