U+0DD6 "ූ" Sinhala Vowel Sign Diga Paa-Pilla Unicode Character

U+0DD6 "ූ" Sinhala Vowel Sign Diga Paa-Pilla is a combining diacritical mark used in the Sinhala script to represent a long vowel sound, specifically the elongated version of the vowel 'u' (like the "oo" in "boot"). It is always written as a subscript glyph attached to the base consonant character, transforming its inherent vowel from short to long. As a key component of Sinhala orthography, this sign distinguishes meaning between words that differ only in vowel length, such as "බු" (bu) versus "බූ" (buu). Visually, it resembles a curved hook or loop beneath the consonant, and its proper placement is essential for accurate reading and writing in both traditional and digital Sinhala text.