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. The standard was reaffirmed in 2003 although it has been administratively withdrawn by ANSI effective 14 February 2013.^[1] It is registered as Registration # 231 in the ISO International Register of Coded Character Sets to be Used with Escape Sequences.^[2][3]

ANSEL is composed of a set of 63 graphic characters intended for use with ASCII, the American National Standard Code for Information Interchange, ANSI X3.4-1986,^[3] including 29 combining diacritic characters. A combining diacritic character precedes the spacing character on which it should be superimposed.^[1]

The following table shows ANSI/NISO Z39.47-1993 (R2003).^[1] Each character is shown with its Unicode equivalent.

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]

The MARC 21 Extended Latin character set is synchronized with ANSEL^[3] but additionally supports the euro sign (€) and eszett (ß) characters.^[6]

• National Information Standards Organization (NISO)
• American National Standards Institute (ANSI)
• ANSI/NISO Z39.47-1985
• ANSI/NISO Z39.47-1993 (R2003)
• ISO-IR 231
• MARC 21 Code Table Extended Latin (ANSEL)