ANSEL explained
| ANSEL |
| Alias: | ISO-IR 231 |
| Standard: | ANSI/NISO Z39.47 (withdrawn) |
| Extensions: | MARC Extended Latin, GEDCOM ANSEL |
| Extends: | US-ASCII |
| Classification: | Extended ASCII, 8-bit encoding |
ANSEL, the American National Standard for Extended Latin Alphabet Coded Character Set for Bibliographic Use, was a character set used in text encoding. It provided a table of coded values for the representation of characters of the extended Latin alphabet in machine-readable form for thirty-five languages written in the Latin alphabet and for fifty-one romanized languages. ANSEL adds 63 graphic characters to ASCII,[1] including 29 combining diacritic characters.
The initial revision of ANSEL was released in 1985, and before 1993 it was registered as Registration #231 in the ISO International Register of Coded Character Sets to be Used with Escape Sequences.[2] The standard was reaffirmed in 2003 although it has been administratively withdrawn by ANSI effective 14 February 2013.[3]
The requirement of hardware capable of overprinting accents doomed this from ever becoming a popular extended ASCII.
Code page layout
The following table shows ANSI/NISO Z39.47-1993 (R2003).[3] Non-ASCII characters are shown with their Unicode code point. A combining diacritic precedes the spacing character on which it should be superimposed[1] (in Unicode the combining diacritic is after the base character).
Use
GEDCOM
The GEDCOM specification for exchanging genealogical data refers to ANSEL (ANSI/NISO Z39.47-1985) as a valid text encoding for GEDCOM files and extends it with additional characters which are shown in the following table.[4] [5]
| Hex | Unicode | Glyph | Description |
|---|
| 0xBE | 25A1 | | empty box |
| 0xBF | 25A0 | | black box |
| 0xCD | 0065 | | midline e |
| 0xCE | 006F | | midline o |
| 0xCF | 00DF | | es zet |
| 0xFC | 0338 | | diacritic slash through char |
|
MARC21
The Extended Latin character set from MARC 21 is synchronized with ANSEL but additionally supports the eszett (ß) character at C7 and the euro sign (€) at C8.[6]
External links
Notes and References
- Extended Latin Alphabet Coded Character Set for Bibliographic Use . 1993 (R2003) . National information standard specification . 3 May 1993 . NISO Press . Bethesda, Maryland . 5 May 2014 . PDF . ANSI/NISO Z39.47-1993 (R2003) . 1-880124-02-5 . 1041-5653 . 25546245 . 12137795M . https://web.archive.org/web/20140314191437/http://www.niso.org/apps/group_public/download.php/6451/Extended%20Latin%20Alphabet%20Coded%20Character%20Set%20for%20Bibliographic%20Use%20%28ANSEL%29.pdf . 14 March 2014.
- Web site: International Register Of Coded Character Sets To Be Used With Escape Sequences (Registration Listing Ordered By Registration Number) . 5 May 2014 . International Register Of Coded Character Sets To Be Used With Escape Sequences . Information Technology Standards Commission of Japan . https://web.archive.org/web/20140409235107/http://kikaku.itscj.ipsj.or.jp/ISO-IR/overview.htm . 9 April 2014.
- Web site: Project Overview: ANSI/NISO Z39.47-1993 (R2003) Extended Latin Alphabet Coded Character Set for Bibliographic Use (ANSEL) (Inactive) . . 5 May 2014 . https://web.archive.org/web/20140314192912/http://www.niso.org/apps/group_public/project/details.php?project_id=10 . 14 March 2014.
- The Church of Jesus Christ of Latter-day Saints, Family History Department . FamilySearch . The GEDCOM Standard Release 5.5 . Information standard specification . 2 December 1995 . Appendix D: ANSEL Character Set . . Salt Lake City, Utah . 87–89 .
- The Church of Jesus Christ of Latter-day Saints, Family History Department . FamilySearch . The GEDCOM Standard Release 5.3 . Information standard specification . 4 November 1993 . . Salt Lake City, Utah . 67–72 .
- Web site: MARC 21 Specifications for Record Structure, Character Sets, and Exchange Media: Code Table Extended Latin (ANSEL) . December 2007 . Library Standards at the Library of Congress . Library of Congress.
