U+01DE "Ǟ" Latin Capital Letter A with Diaeresis and Macron Unicode Character

U+01DE "Ǟ" Latin Capital Letter A with Diaeresis and Macron is a composite glyph that combines a standard Latin capital letter A with two diacritical marks: a diaeresis, consisting of two dots placed above the letter, and a macron, which is a horizontal line situated above the diaeresis. This character is used in the transcription of certain languages, such as in the romanization of Old English or in specific linguistic contexts to denote a long vowel sound that is also pronounced with a distinct quality, often indicating a phonemic distinction where the diaeresis signals a change in vowel pronunciation and the macron marks length. It appears in Unicode within the Latin Extended-B block and is typically employed in scholarly or orthographic systems rather than in everyday modern writing.