—utilised for a perform term in advance of a correct noun to distinguish the affliction in the referent from the regular, previous, or hypothetical issueFrom the Intercontinental Phonetic Alphabet, ⟨a⟩ is used for the open front unrounded vowel, ⟨ä⟩ is useful for the open up central unrounded vowel, and ⟨ɑ⟩ is used for the open back