CEN Guide to the Use of Character Sets in EuropeTC 304

8-Bit Character Sets - ISO/IEC 10367


Current edition

ISO/IEC 10367:1991
Information technology - Standardized coded graphic character sets for use in 8-bit codes (first edition).

Description

ISO/IEC 10367 specifies a collection of coded graphic character sets suitable for use within the structure of an 8-bit code as laid down in ISO/IEC 4873. These sets are all suitable for use as any of the code elements G1, G2 and G3 in a version of ISO/IEC 4873 at any of its three levels of implementation. The G0 code element of ISO/IEC 4873 is prescribed by that standard but is repeated for information in ISO/IEC 10367. ISO/IEC 10367 does not specify the sets C0 and C1 of control functions that may be used in a version of ISO/IEC 4873 that conforms to ISO/IEC 10367.

Tutorial guidance

The coded graphic character sets specified in ISO/IEC 10367 are all contained in the ISO 2375 Register. Their register entries, together with the escape sequences that designate them as a G1, G2 or G3 code element, are as follows.

Since the publication of ISO/IEC 10367, other character sets have been registered that are also intended for use as G1, G2 or G3 code elements in a version of ISO/IEC 4873. Some of these have also been standardised in further parts of ISO/IEC 8859. Although these are not part of ISO/IEC 10367, they are listed here for completeness:

In these escape sequences, replacement of "gg" by 02/13, 02/14 or 02/15 specifies designation as a G1, G2 or G3 code element respectively. These Intermediate Bytes specify designation of a 96-position single-byte character set as the code element concerned; see designation of graphic character sets in the section of this guide on control functions.

For more details of the character sets taken from ISO/IEC 646, ISO/IEC 8859 and ISO/IEC 6937, including the languages for which they are suitable, see the entries for those standards in this guide. The entry for ISO/IEC 8859 also covers the additional sets listed above.

There is a requirement concerning the Supplementary Set of ISO/IEC 6937 (ISO- IR 156) that it shall not be used in conjunction with any of the Latin Alphabet Supplementary Sets. However, it may be used in conjunction with any two of the supplementary sets for Greek, Cyrillic, Arabic and Hebrew as G2 and G3 code elements, to provide support for these scripts in addition to a wide range of languages in the Latin script.

Use of ISO-IR 156 requires the support of non-spacing diacritical marks and so results in a code with variable-length coding. All the 333 characters (including SPACE) that are in the repertoire of ISO/IEC 6937 can be represented with single-byte coding by selecting ISO-IR 100 or 148 as the G1 code element, ISO-IR 101 as the G2 code element and ISO-IR 154 as the G3 code element.

There may be a need in an instance of communication to be able to identify a subrepertoire of the full repertoire of characters present in the character sets of ISO/IEC 10367. Procedures for the registration of such subrepertoires are specified in ISO/IEC 7350.


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