U+115DD "𑗝" Siddham Vowel Sign Alternate Uu Unicode Character

U+115DD "𑗝" Siddham Vowel Sign Alternate Uu is a diacritical mark used in the Siddham script, an historic syllabary primarily employed for writing Sanskrit and Buddhist texts in East Asia, notably in Japan. This specific glyph represents an alternate graphical form of the vowel sign for the sound "uu," which modifies a consonant by adding a long 'u' sound. Unlike the standard Siddham vowel sign for 'uu,' this alternate variant was occasionally used in manuscripts and inscriptions, reflecting scribal variation or stylistic choice. The character is encoded under the Siddham block in Unicode, supporting digital preservation and study of this ancient script.