ANSEL

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Sets to be Used with Escape Sequences.^[2] The standard was reaffirmed in 2003 although it has been administratively withdrawn by ANSI effective 14 February 2013.^[3]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.^{[citation needed]}

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]

MARC21

The Extended Latin character set from MARC 21 is synchronized with ANSEL^[2] but additionally supports the eszett (ß) character at C7 and the euro sign (€) at C8.^[6]

References

External links

• National Information Standards Organization (NISO)
• American National Standards Institute (ANSI)
• ANSI/NISO Z39.47-1985
• ANSI/NISO Z39.47-1993 (R2003) Archived 2014-03-14 at the Wayback Machine
• ISO-IR 231
• MARC 21 Code Table Extended Latin (ANSEL)

This page was last edited on 10 October 2023, at 06:47