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Arabic Presentation Forms-B
| Arabic Presentation Forms-B | |
|---|---|
| Range | U+FE70..U+FEFF (144 code points) |
| Plane | BMP |
| Scripts | Arabic (140 char.) Common (1 char.) |
| Symbol sets | contextual and isolate forms of Arabic letters and points |
| Assigned | 141 code points |
| Unused | 3 reserved code points |
| Unicode version history | |
| 1.0.0 (1991) | 140 (+140) |
| 3.2 (2002) | 141 (+1) |
| Unicode documentation | |
| Code chart ∣ Web page | |
| Note: [1][2] The characters in this block were re-ordered in Unicode 1.0.1, in the process of merging with ISO/IEC 10646.[3] | |
Arabic Presentation Forms-B is a Unicode block encoding spacing forms of Arabic diacritics, and contextual letter forms. The special codepoint ZWNBSP (zero width no-break space) is also here, which is only meant for a byte order mark (that may precede text, Arabic or not, or be absent).[note 1] The block name in Unicode 1.0 was Basic Glyphs for Arabic Language;[5] its characters were re-ordered in the process of merging with ISO 10646 in Unicode 1.0.1 and 1.1.[3]
The presentation forms are present only for compatibility with older standards, and are not currently needed for coding text.[6]
- ^ "Unicode character database". The Unicode Standard. Retrieved 2023-07-26.
- ^ "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2023-07-26.
- ^ a b "Unicode 1.0.1 Addendum" (PDF). The Unicode Standard. 1992-11-03. Retrieved 2016-07-09.
- ^ "Layout Controls" (PDF). The Unicode Standard, Version 12.0.0. The Unicode Consortium. p. 871.
- ^ "3.8: Block-by-Block Charts" (PDF). The Unicode Standard. version 1.0. Unicode Consortium.
- ^ The Unicode Consortium. The Unicode Standard, Version 6.0.0, (Mountain View, CA: The Unicode Consortium, 2011. ISBN 978-1-936213-01-6), Chapter 8
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