U+1F94 "ᾔ" Greek Small Letter Eta with Psili and Oxia and Ypogegrammeni Unicode Character

U+1F94 "ᾔ" Greek Small Letter Eta with Psili and Oxia and Ypogegrammeni is a polytonic Greek letter used in ancient Greek texts to represent the vowel eta (η) with multiple diacritical marks that modify its pronunciation and meaning. Specifically, it combines a psili (smooth breathing mark) indicating the absence of an initial h-sound, an oxia (acute accent) denoting a high pitch, and a ypogegrammeni (a small iota subscript written beneath the letter) which signifies a long diphthong that was originally pronounced as a combination of eta and iota. This character is rare and primarily found in scholarly editions or liturgical works that require precise representation of ancient Greek phonetics and accentuation.