U+A666 "Ꙧ" Cyrillic Capital Letter Soft Em Unicode Character

U+A666 "Ꙧ" Cyrillic Capital Letter Soft Em is one of the Cyrillic Extended-B block characters, used historically in early Cyrillic alphabets to represent a palatalized or "soft" version of the sound /m/, typically occurring before front vowels or as part of certain scribal traditions in Old Church Slavonic and early East Slavic manuscripts. This letter features a distinctive diacritic-like hook or tail on its right side to indicate the softening, and it belongs to a set of rare, specialized glyphs that were part of efforts in the 16th and 17th centuries to regularize orthography, though it is no longer used in any modern Cyrillic-based alphabet. Its inclusion in Unicode ensures that scholars, linguists, and digital archivists can accurately represent and preserve these historically important textual artifacts.