Old Nubian script
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Used in medieval Nubia to write the Nubian language from 8th to 15th cent; recent efforts by activists to revive it for writing the modern language.
Like the Coptic Script, it is based on uncial Greek, to which it adds three specifically Coptic characters (ultimately from Demotic) and three characters taken from the ancient Meroitic script.
There has been discussion of adding the necessary characters to Unicode.
Other sources
Wikipedia, "Old Nubian language, Writing," http://en.wikipedia.org/wiki/Old_Nubian_language#Writing
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