Arabic Presentation Forms-B
Unicode character block
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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) The byte-order mark is very useful in detecting endianness in UTF-16, because when it is at the start of UTF-16 data and the interpreter reads the first character as the noncharacter U+FFFE (see Specials), the file is clearly interpreted with the wrong endianness.[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]
(144 code points)
| 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] | |
The presentation forms are present only for compatibility with older standards, and are not currently needed for coding text.[6]
Block
| Arabic Presentation Forms-B[1][2] Official Unicode Consortium code chart (PDF) | ||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | A | B | C | D | E | F | |
| U+FE7x | ﹰ | ﹱ | ﹲ | ﹳ | ﹴ | ﹶ | ﹷ | ﹸ | ﹹ | ﹺ | ﹻ | ﹼ | ﹽ | ﹾ | ﹿ | |
| U+FE8x | ﺀ | ﺁ | ﺂ | ﺃ | ﺄ | ﺅ | ﺆ | ﺇ | ﺈ | ﺉ | ﺊ | ﺋ | ﺌ | ﺍ | ﺎ | ﺏ |
| U+FE9x | ﺐ | ﺑ | ﺒ | ﺓ | ﺔ | ﺕ | ﺖ | ﺗ | ﺘ | ﺙ | ﺚ | ﺛ | ﺜ | ﺝ | ﺞ | ﺟ |
| U+FEAx | ﺠ | ﺡ | ﺢ | ﺣ | ﺤ | ﺥ | ﺦ | ﺧ | ﺨ | ﺩ | ﺪ | ﺫ | ﺬ | ﺭ | ﺮ | ﺯ |
| U+FEBx | ﺰ | ﺱ | ﺲ | ﺳ | ﺴ | ﺵ | ﺶ | ﺷ | ﺸ | ﺹ | ﺺ | ﺻ | ﺼ | ﺽ | ﺾ | ﺿ |
| U+FECx | ﻀ | ﻁ | ﻂ | ﻃ | ﻄ | ﻅ | ﻆ | ﻇ | ﻈ | ﻉ | ﻊ | ﻋ | ﻌ | ﻍ | ﻎ | ﻏ |
| U+FEDx | ﻐ | ﻑ | ﻒ | ﻓ | ﻔ | ﻕ | ﻖ | ﻗ | ﻘ | ﻙ | ﻚ | ﻛ | ﻜ | ﻝ | ﻞ | ﻟ |
| U+FEEx | ﻠ | ﻡ | ﻢ | ﻣ | ﻤ | ﻥ | ﻦ | ﻧ | ﻨ | ﻩ | ﻪ | ﻫ | ﻬ | ﻭ | ﻮ | ﻯ |
| U+FEFx | ﻰ | ﻱ | ﻲ | ﻳ | ﻴ | ﻵ | ﻶ | ﻷ | ﻸ | ﻹ | ﻺ | ﻻ | ﻼ | ZW NBSP | ||
| Notes | ||||||||||||||||
History
The following Unicode-related documents record the purpose and process of defining specific characters in the Arabic Presentation Forms-B block:
| Version | Final code points[a] | Count | UTC ID | L2 ID | WG2 ID | Document |
|---|---|---|---|---|---|---|
| 1.0.0 | U+FE70..FE72, FE74, FE76..FE7F | 14 | UTC/1991-048B | Whistler, Ken (1991-03-27), "14 addtional [sic] Arabic spacing diacritics", Draft Minutes from the UTC meeting #46 day 2, 3/27 at Apple | ||
| U+FE80..FEFC | 125 | (to be determined) | ||||
| U+FEFF | 1 | UTC/1991-054 | Whistler, Ken, FF Proposal | |||
| UTC/1991-048B | Whistler, Ken (1991-03-27), "III.I.4", Draft Minutes from the UTC meeting #46 day 2, 3/27 at Apple | |||||
| L2/05-137 | Freytag, Asmus (2005-05-10), Handling "defective" names | |||||
| L2/05-108R | Moore, Lisa (2005-08-26), "Consensus 103-C7", UTC #103 Minutes, Create a "Normative Name Alias" property and file in the UCD. Populate the property with names from the sections "Typos" and "Bad or misleading names" from document L2/05-137. | |||||
| 3.2 | U+FE73 | 1 | L2/01-069 | Davis, Mark (2001-01-29), Proposal Summary Form for Arabic character tail for final Seen family (Seen, Sheen, Saad, Daad) | ||
| L2/01-095 | N2322 | Umamaheswaran, V. S. (2001-02-05), Proposal to add "Arabic Tail Fragment" character | ||||
| L2/01-012R | Moore, Lisa (2001-05-21), "Motion 86-M30", Minutes UTC #86 in Mountain View, Jan 2001, Accept the addition of the character ARABIC TAIL FRAGMENT at U+FE73, with the properties of an extender. | |||||
| L2/01-344 | N2353 (pdf, doc) | Umamaheswaran, V. S. (2001-09-09), "7.9", Minutes from SC2/WG2 meeting #40 -- Mountain View, April 2001 | ||||
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