U+1E023 "𞀣" Combining Glagolitic Letter Yu Unicode Character

U+1E023 "𞀣" Combining Glagolitic Letter Yu is a combining diacritical mark used within the Glagolitic script, one of the oldest known Slavic alphabets, to represent the sound of the letter "Yu" when attached to a base character. Unlike a standalone letter, this character is specifically designed to combine with a preceding Glagolitic letter, modifying its pronunciation to include the "yu" vowel sound, rather than appearing as an independent glyph. It was added to the Unicode Standard as part of the Glagolitic Supplement block to support historical and liturgical texts where such combined forms are necessary for accurate representation.