U+11581 "𑖁" Siddham Letter Aa Unicode Character

U+11581 "𑖁" Siddham Letter Aa is a glyph representing the long vowel "aa" in the Siddham script, a historic abugida primarily used in East Asia for writing Buddhist texts in Sanskrit and other languages. It is one of the foundational vowel characters in the Siddham syllabary, distinguished from the short "a" by its longer phonetic duration and typically modified with a diacritic mark. This character was encoded in Unicode as part of the Siddham block in version 7.0 of the standard, reflecting efforts to preserve and digitally represent ancient scripts important for Buddhist manuscript studies and calligraphy.