—employed being a function phrase prior to a suitable noun to differentiate the problem of your referent from a normal, previous, or hypothetical conditionWithin the Intercontinental Phonetic Alphabet, ⟨a⟩ is used for the open front unrounded vowel, ⟨ä⟩ is employed for the open central unrounded vowel, and ⟨ɑ⟩ is useful for the open