In Algerian Braille, the braille letters are assigned in numeric order to the Arabic alphabet; standard Arabic Braille on the other hand uses a completely different assignment, following international norms based on the order of the French alphabet. For example, the fifth braille letter, ⠑, is used in Algerian Braille for ج j, the fifth letter of the Algerian/Arabic alphabet. In most braille alphabets today, ⠑ is used for e, the fifth letter of the French/Latin alphabet, or for a letter that sounds like e, no matter where it occurs in those alphabets.
Algerian-type remapping was common in early braille adaptations, but was largely abandoned in favor of mutually understandable standards beginning with the unification French, English, German, and Egyptian Braille on the original French order in 1878.
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