U+1F37 "ἷ" Greek Small Letter Iota with Dasia and Perispomeni Unicode Character

U+1F37 "ἷ" Greek Small Letter Iota with Dasia and Perispomeni is a historical Greek letter used in ancient polytonic orthography, where the dasia (rough breathing mark) indicates an initial aspiration pronounced like an "h" sound, and the perispomeni (circumflex accent) denotes a rising and falling pitch on the vowel. This specific iota appears primarily in pre-classical and classical Greek manuscripts alongside epsilon or eta to represent diphthongs or long vowels with aspiration, and it is rarely used in modern Greek, which employs a simplified monotonic system. The character is part of the Unicode Greek Extended block, supporting scholars and typographers in accurately preserving and typesetting ancient texts with their original accentuation and breathing marks.