Cyrillic Subscript Pe

It is Cyrillic pe set as a separate subscript character. Cyrillic is the alphabet used by Bulgarian, Russian, Ukrainian and Serbian, among other languages; ordinary small pe is п. Some transcription systems use superscripts for fine pronunciation details and subscripts for phonological groupings. An archiphoneme is one label for sounds whose contrast disappears in certain positions. These are conventions, not a universal code, so the transcription’s key settles the reading.

Subscript notation predates digital text. In 1905, Serbian linguist Aleksandar Belić used raised and lowered letters for stronger and weaker vowel values. A 2007 study of Bulgarian dialects uses subscript pe in a grouping of п, п’, б and б’; the apostrophe marks palatalization, when the tongue is raised toward the palate. Cyrillic’s earliest recorded uses are in Old Church Slavonic manuscripts from the 10th century, long before this later transcription mark. A 2021 Unicode proposal requested separate modifier characters because position can distinguish meanings and the letters may need added diacritics.