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Computers and the Arabic alphabet

The Arabic alphabet can be encoded using several character sets, including ISO-8859-6, Windows-1256 and Unicode (see links in Infobox, above), in the latter thanks to the "Arabic segment", entries U+0600 to U+06FF. However, neither of these sets indicate the form each character should take in context. It is left to the rendering engine to select the proper glyph to display for each character. For compatibility with previous standards, initial, medial, final and isolated forms can be encoded separately in Unicode; however, they can also be inferred from their joining context, using the same encoding. The following table shows this common encoding, in addition to the compatibility encodings for their normally contextual forms (Arabic texts should be encoded today using only the common encoding, but the rendering must then infer the joining types to determine the correct glyph forms, with or without ligation).

  • Unicode
  • Keyboards
  • Handwriting recognition

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