Yn

Yn is an archaic Cyrillic letter. It looks like the Cyrillic letter Psi (Ѱ ѱ) with its upper half turned upside down, but the letter mostly looks like an arrow pointing vertically up (↑).

It was used in the Romanian Cyrillic alphabet, where it represented the sounds, , and at the beginning of words. In the modern Romanian alphabet it is replaced by $⟨în⟩$, $⟨îm⟩$, or $⟨î⟩$.

Computing codes
As few fonts contain the appropriate glyphs, the Upwards Arrow (↑) is sometimes substituted. The notable fonts that have included this glyph are FreeSerif and Segoe UI (since Windows 8).