Arabic Presentation Forms-A

Arabic Presentation Forms-A is a Unicode block encoding contextual forms and ligatures of letter variants needed for Persian, Urdu, Sindhi and Central Asian languages. This block also encodes 32 noncharacters in Unicode.

Arabic Presentation Forms-A
RangeU+FB50..U+FDFF
(688 code points)
PlaneBMP
ScriptsArabic (609 char.)
Common (2 char.)
Major alphabetsCentral Asian languages
Pashto
Persian
Sindhi
Urdu
Symbol setscontextual forms
multi-letter and
word ligatures
Assigned611 code points
Unused45 reserved code points
32 non-characters
Unicode version history
1.1593 (+593)
3.2594 (+1)
4.0595 (+1)
6.0611 (+16)
Note: [1][2]

The presentation forms are present only for compatibility with older standards such as codepage 864 used in DOS, and are typically used in visual and not logical order.[3]

BlockEdit

Arabic Presentation Forms-A[1][2][3]
Official Unicode Consortium code chart (PDF)
  0 1 2 3 4 5 6 7 8 9 A B C D E F
U+FB5x
U+FB6x
U+FB7x ﭿ
U+FB8x
U+FB9x
U+FBAx
U+FBBx ﮿
U+FBCx
U+FBDx
U+FBEx
U+FBFx ﯿ
U+FC0x
U+FC1x
U+FC2x
U+FC3x ﰿ
U+FC4x
U+FC5x
U+FC6x
U+FC7x ﱿ
U+FC8x
U+FC9x
U+FCAx
U+FCBx ﲿ
U+FCCx
U+FCDx
U+FCEx
U+FCFx ﳿ
U+FD0x
U+FD1x
U+FD2x
U+FD3x ﴿
U+FD4x
U+FD5x
U+FD6x
U+FD7x ﵿ
U+FD8x
U+FD9x
U+FDAx
U+FDBx ﶿ
U+FDCx
U+FDDx
U+FDEx
U+FDFx
Notes
1.^ As of Unicode version 13.0
2.^ Grey areas indicate non-assigned code points
3.^ Black areas indicate noncharacters (code points that are guaranteed never to be assigned as encoded characters in the Unicode Standard)

HistoryEdit

The following Unicode-related documents record the purpose and process of defining specific characters in the Arabic Presentation Forms-A block:

Version Final code points[a] Count L2 ID WG2 ID Document
1.1 U+FB50..FBB1, FBD3..FD3F, FD50..FD8F, FD92..FDC7, FDF0..FDFB 593 (to be determined)
L2/06-008R2 Moore, Lisa (2006-02-13), "Motion 106-M3", UTC #106 Minutes, Drop U+FD3E ORNATE LEFT PARENTHESIS and U+FD3F ORNATE RIGHT PARENTHESIS from the list of characters with Bidi Mirrored property proposed in Public Review Issue 80.
L2/14-026 Moore, Lisa (2014-02-17), "Consensus 138-C21", UTC #138 Minutes, Change the General Category and linebreak properties of U+FD3E LEFT ORNATE PARENTHESIS to gc=Pe and lb=CL; and change General Category and linebreak properties of U+FD3F RIGHT ORNATE PARENTHESIS to gc=Ps and lb=OP, in Unicode 7.0.
3.1 U+FDD0..FDEF 32 L2/00-187 Moore, Lisa (2000-08-23), "Not a Character", UTC minutes -- Boston, August 8-11, 2000
L2/00-341 N2277 Addition of reserved characters for internal processing uses, 2000-09-19
L2/01-050 N2253 Umamaheswaran, V. S. (2001-01-21), "7.20 Proposal for Reserved Positions for Processing Purposes", Minutes of the SC2/WG2 meeting in Athens, September 2000
3.2 U+FDFC 1 L2/98-359 N1856 Sato, T. K. (1998-08-21), Addition of Rial sign on ISO/IEC 10646-1
L2/01-148R Pournader, Roozbeh (2001-04-07), Proposal: Arabic Ligature Rial
L2/01-184R Moore, Lisa (2001-06-18), "Motion 87-M6", Minutes from the UTC/L2 meeting
L2/01-354 N2373 Pournader, Roozbeh (2001-09-20), Proposal: Arabic Currency Sign Rial
L2/02-154 N2403 Umamaheswaran, V. S. (2002-04-22), "7.8", Draft minutes of WG 2 meeting 41, Hotel Phoenix, Singapore, 2001-10-15/19
4.0 U+FDFD 1 L2/02-005 Hussain, Sarmad; Afzal, Muhammad (2001-12-18), Urdu Computing Standards (Charts and Exhibits)
L2/02-006 (pdf, doc) N2413-1 Zia, Khaver (2002-01-10), Towards Unicode Standard for Urdu
L2/02-003 N2413-2 Afzal, Muhammad; Hussain, Sarmad (2001-12-28), Urdu Computing Standards: Development of Urdu Zabta Takhti (UZT) 1.01
L2/02-004 N2413-3 Hussain, Sarmad; Afzal, Muhammad (2001-12-28), Urdu Computing Standards: Urdu Zabta Takhti (UZT) 1.01
L2/02-163 N2413-4 (pdf, doc) Proposal to add Marks and Digits in Arabic Code Block (for Urdu), 2002-04-30
L2/02-011R Kew, Jonathan (2002-01-12), Comments on L2/02-006: Towards Unicode Standard for Urdu
L2/02-197 Freytag, Asmus (2002-05-01), Urdu Feedback from Bidi Committee
L2/02-166R2 Moore, Lisa (2002-08-09), "Motion 91-M3", UTC #91 Minutes
L2/02-372 N2453 (pdf, doc) Umamaheswaran, V. S. (2002-10-30), "7.9 Urdu contribution", Unconfirmed minutes of WG 2 meeting 42
L2/02-466 N2567 Everson, Michael; Pournader, Roozbeh (2002-12-09), Towards resolution on the name of U+FDFD
L2/02-467 N2568 Everson, Michael; Pournader, Roozbeh; Hussain, Sarmad; Afzal, Muhammad (2002-12-10), Consensus on the name of U+FDFD
L2/04-196 N2653 (pdf, doc) Umamaheswaran, V. S. (2004-06-04), "a-3", Unconfirmed minutes of WG 2 meeting 44
6.0 U+FBB2..FBC1 16 L2/98-274 Davis, Mark; Mansour, Kamal (1998-07-28), Proposed Arabic Script Additions for Minority Languages
L2/98-409 Davis, Mark; Mansour, Kamal (1998-12-01), Proposal to add 25 Arabic characters to the BMP
L2/98-419 (pdf, doc) Aliprand, Joan (1999-02-05), "Additional Arabic characters", Approved Minutes -- UTC #78 & NCITS Subgroup L2 # 175 Joint Meeting, San Jose, CA -- December 1-4, 1998
L2/02-021 Davis, Mark; Mansour, Kamal (2002-01-17), Proposal To Amend Arabic repertoire
L2/03-154 Kew, Jonathan; Mansour, Kamal; Davis, Mark (2003-05-16), Proposal to encode productive Arabic-script modifier marks
L2/06-039 N3460-A Durrani, Attash (2006-01-29), Preliminary Proposal to add Nuqta Characters to Arabic Block
L2/06-240 Kew, Jonathan (2006-07-19), Letter to Dr. Durrani
L2/06-322 Durrani, Attash (2006-10-04), Letter to Jonathan Kew re Nuqtas
L2/07-094 Durrani, Attash (2007-04-03), Regarding Nuqta Characters
L2/07-174 Durrani, Attash (2007-05-14), The Case Folding Solution for the Arabic Script
L2/08-159 Durrani, Attash; Mansour, Kamal; McGowan, Rick (2008-04-18), Proposal to Encode 22 Characters for Arabic Pedagogical Use
L2/08-230 Anderson, Deborah (2008-05-23), Comments on Proposal to Encode 22 Characters for Arabic Pedagogical Use
L2/08-159R N3460R Durrani, Attash; Mansour, Kamal; McGowan, Rick (2008-06-24), Proposal to Encode 16 Characters for Arabic Pedagogical Use
L2/08-161R2 Moore, Lisa (2008-11-05), "Motion 115-M3", UTC #115 Minutes
L2/08-412 N3553 (pdf, doc) Umamaheswaran, V. S. (2008-11-05), "M53.19", Unconfirmed minutes of WG 2 meeting 53
L2/08-361 Moore, Lisa (2008-12-02), "Consensus 117-C26", UTC #117 Minutes
L2/09-011 Pournader, Roozbeh (2009-01-13), Consistent naming and better properties for Arabic Pedagogical Symbols
L2/09-110 N3606 Pandey, Anshuman (2009-03-30), Proposal to Advance the Renaming of Arabic Pedagogical Symbols
L2/09-234 N3603 (pdf, doc) Umamaheswaran, V. S. (2009-07-08), "M54.06a", Unconfirmed minutes of WG 2 meeting 54
L2/09-104 Moore, Lisa (2009-05-20), "Consensus 119-C25", UTC #119 / L2 #216 Minutes
  1. ^ Proposed code points and characters names may differ from final code points and names

See alsoEdit

ReferencesEdit

  1. ^ "Unicode character database". The Unicode Standard. Retrieved 2016-07-09.
  2. ^ "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2016-07-09.
  3. ^ 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