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Arabic Presentation Forms-A

Unicode character block

Field	Value
rangestart	FB50
rangeend	FDFF
script1	Arabic (654 char.)
script2	Common (2 char.)
alphabets	Central Asian languages
Pashto
Persian
Kurdish
Sindhi
Urdu
symbols	contextual forms
multi-letter and
word ligatures
nonchar	32
1_1	593
3_2	1
4_0	1
6_0	16
14_0	20
17_0	25
note
This range was initially part of the Private Use Area in Unicode 1.0.0, and removed from it in Unicode 1.0.1.

Pashto Persian Kurdish Sindhi Urdu multi-letter and word ligatures This range was initially part of the Private Use Area in Unicode 1.0.0, and removed from it in Unicode 1.0.1. FORCETOC

Graphical representation of the Arabic Presentation Forms-A Unicode block

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 allocates 32 noncharacters in Unicode, designed specifically for internal use.

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. It has been agreed no further presentation forms will be encoded; though the block still sees further encodings including a contiguous range of 32 noncharacters.

Block

History

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

Version	Count	L2 ID	Document
1.1	U+FB50..FBB1, FBD3..FD3F, FD50..FD8F, FD92..FDC7, FDF0..FDFB	593
	[N5155](https://www.unicode.org/wg2/docs/n5155-20289-kazakh-kyrgyz-uyghur-annot.pdf)
3.1	U+FDD0..FDEF	32
	[N2277](https://www.unicode.org/wg2/docs/n2277.doc)
	[N2253](https://www.unicode.org/wg2/docs/n2253.pdf)
3.2	U+FDFC	1
	[N2373](https://www.unicode.org/wg2/docs/n2373.pdf)
	[N2403](https://www.unicode.org/wg2/docs/n2403.pdf)
4.0	U+FDFD	1
[doc](https://www.unicode.org/L2/L2002/02006-zia.doc))
	[doc](https://web.archive.org/web/20200215052615/http://std.dkuug.dk/jtc1/sc2/wg2/docs/n2413-4.doc))
	[doc](https://www.unicode.org/wg2/docs/n2453.doc))
	[N2567](https://www.unicode.org/wg2/docs/n2567.pdf)
	[N2568](https://www.unicode.org/wg2/docs/n2568.pdf)
	[doc](https://www.unicode.org/wg2/docs/n2653.doc))
6.0	U+FBB2..FBC1	16
[doc](https://www.unicode.org/L2/L1998/98419.doc))
	[N3460R](https://www.unicode.org/wg2/docs/n3460.pdf)
	[doc](https://www.unicode.org/wg2/docs/n3553.doc))
	[N3606](https://www.unicode.org/wg2/docs/n3606.pdf)
	[doc](https://www.unicode.org/wg2/docs/n3603.doc))
14.0	U+FBC2	1	[N5142](https://www.unicode.org/wg2/docs/n5142-19306-quranic-additions.pdf)
U+FD40..FD4B, FDFE..FDFF	14
U+FD4C..FD4D	2
U+FD4E..FD4F	2
U+FDCF	1
17.0	U+FBC3..FBD2, FD91	17
U+FD90, FDC8..FDCE	8

References

"Unicode character database". The Unicode Standard.
"Enumerated Versions of The Unicode Standard". The Unicode Standard.
(1991). "The Unicode Standard, Version 1.0, Volume 1". [[Unicode Consortium]].
"Version 1.0.1 Notice Page". [[Unicode Consortium]].
The Unicode Consortium. [https://www.unicode.org/versions/Unicode6.0.0/ The Unicode Standard, Version 6.0.0], (Mountain View, CA: The Unicode Consortium, 2011. {{ISBN. 978-1-936213-01-6), [https://www.unicode.org/versions/Unicode6.0.0/ch08.pdf Chapter 8]
"Private-Use Characters, Noncharacters & Sentinels FAQ".
Proposed code points and characters names may differ from final code points and names

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

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