English terms with diacritical marks
The Old English Latin alphabet began to replace the Runic alphabet in the 9th century, due to the influence of Celtic Christian missionaries to the Anglo-Saxon kingdoms. The orthography of Old English – which was entirely handwritten in its own time – was not well standardized, though it did not use all the Latin letters, and included several letters not present in the modern alphabet. When reprinted (on a printing press or computer) in modern times, an overdot is occasionally used with two Latin letters to differentiate sounds for the reader:
Romic alphabet
The Romic Alphabet, sometimes known as the Romic Reform, is a phonetic alphabet proposed by Henry Sweet. It descends from Ellis's Palaeotype alphabet and English Phonotypic Alphabet, and is the direct ancestor of the International Phonetic Alphabet. In Romic every sound had a dedicated symbol, and every symbol represented a single sound. There were no capital letters; there were letters derived from small capitals, though these were distinct letters.