ISO/IEC 10367

ISO/IEC 10367:1991 is a standard developed by ISO/IEC JTC 1/SC 2,[1] defining graphical character sets for use in character encodings implementing levels 2 and 3 of ISO/IEC 4873[2] (as opposed to ISO/IEC 8859, which defines character encodings at level 1 of ISO/IEC 4873).

Relationship to ISO/IEC 8859

The parts of ISO/IEC 8859 define complete encodings at level 1 of ISO/IEC 4873 (i.e. as stateless extended ASCII single-byte encodings, reserving the C1 area), and do not allow for use of multiple parts together. For use at levels 2 and 3 of ISO/IEC 4873 (i.e. with shift codes for additional graphical character sets), ISO/IEC 8859 stipulates that equivalent sets from ISO/IEC 10367 should be used instead.[3]

ISO/IEC 10367:1991 includes ASCII, as well as sets matching the G1 sets used for the right-hand sides (non-ASCII parts) of ISO/IEC 6937 (ITU T.51) and of ISO/IEC 8859 parts 1 through 9 (i.e. those parts which existed as of 1991, when it was published), a set of additional Roman characters supplementing some of those parts, and a set of box drawing characters (shown below).[2][4]

Supplementary G3 Latin set

ISO/IEC 10367 includes the ISO-IR-154 graphical set, which is intended to supplement Latin alphabets number 1, 2 and 5 (i.e. ISO-8859-1, ISO-8859-2 and ISO-8859-9).[4] Specifically, it is intended for use as a G3 set in a profile of ISO/IEC 4873 in which the G1 and G2 sets include the right hand side of ISO-8859-2, and also that of either ISO-8859-1 or ISO-8859-9.[5] These configurations allow the entire ISO/IEC 6937 repertoire (ITU T.51 Annex A) to be represented without the use of non-spacing codes.[6]

For instance, the letter Ĉ would be encoded under ISO/IEC 4873 level 2 as 0x8F 0x23 if this set is included.

Characters which also appear in ISO-8859-1 are shown below with a grey box, while those which also appear in ISO-8859-9 are shown with a green box. Under the current edition of ISO/IEC 4873 / ECMA-43 (although not earlier editions),[7] characters must be used from the lowest-numbered working set they appear in, hence those characters are not used from this G3 set when the respective ISO-8859 right-hand side set is used as the G1 or G2 set.[8]

ISO/IEC 10367 supplementary G3 Latin set[5]

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
2_/A_			Ā 0100	Ĉ 0108	Ċ 010A		Ė 0116	Ē 0112	Ĝ 011C	‘ 2018	“ 201C	™ 2122	← 2190	↑ 2191	→ 2192	↓ 2193
3_/B_			ā 0101	ĉ 0109	ċ 010B	ð 00F0	ė 0117	ē 0113	ĝ 011D	’ 2019	” 201D	♪ 266A	⅛ 215B	⅜ 215C	⅝ 215D	⅞ 215E
4_/C_		Ğ 011E	Ġ 0120	Ģ 0122	Ĥ 0124	Ħ 0126	Ĩ 0128	İ 0130	Ī 012A	Į 012E	IJ 0132	Ĵ 0134	Ķ 0136	Ļ 013B	Ŀ 013F	Ņ 0145
5_/D_	— 2014	Ŋ 014A	Ō 014C	Œ 0152	Ŗ 0156	Ŝ 015C	Ŧ 0166	Þ 00DE	Ũ 0168	Ŭ 016C	Ū 016A	Ų 0172	Ŵ 0174	Ý 00DD	Ŷ 0176	Ÿ 0178
6_/E_	Ω 2126	ğ 011F	ġ 0121	ģ 0123	ĥ 0125	ħ 0127	ĩ 0129	ı 0131	ī 012B	į 012F	ij 0133	ĵ 0135	ķ 0137	ļ 013C	ŀ 0140	ņ 0146
7_/F_	ĸ 0138	ŋ 014B	ō 014D	œ 0153	ŗ 0157	ŝ 015D	ŧ 0167	þ 00FE	ũ 0169	ŭ 016D	ū 016B	ų 0173	ŵ 0175	ý 00FD	ŷ 0177	ʼn 0149

Box drawing set

The following shows the box drawing set from ISO/IEC 10367, which is registered for ISO/IEC 2022 use as ISO-IR-155. Although it does not make use of the 0x20/A0 or 0x7F/FF positions, it is registered as a 96-character set.[9]

Perl libintl includes a "ISO_10367-BOX" codec. This encodes/decodes ASCII over GL and the ISO-IR-155 box drawing set over GR with a few deviations. Specifically, it includes double-lined box-drawing characters in place of heavy-lined characters, and it replaces the upper half block (▀) at 0xCB with a private use character U+E019, documented as "Unit space B".[10]

ISO/IEC 10367 box drawing set[9]

	_0	_1	_2	_3	_4	_5	_6	_7	_8	_9	_A	_B	_C	_D	_E	_F
2_/A_
3_/B_
4_/C_	┃ 2503	━ 2501	┏ 250F	┓ 2513	┗ 2517	┛ 251B	┣ 2523	┫ 252B	┳ 2533	┻ 253B	╋ 254B	▀ 2580	▄ 2584	█ 2588	▪ 25AA
5_/D_	│ 2502	─ 2500	┌ 250C	┐ 2510	└ 2514	┘ 2518	├ 251C	┤ 2524	┬ 252C	┴ 2534	┼ 253C	░ 2591	▒ 2592	▓ 2593
6_/E_
7_/F_

References

1. ISO/IEC JTC 1/SC 2 (1991). "Information technology — Standardized coded graphic character sets for use in 8-bit codes". ISO. ISO/IEC 10367:1991.
2. van Wingen, Johan W (1999). "8. Code Extension, ISO 2022 and 2375, ISO 4873 and 10367". Character sets. Letters, tokens and codes. Terena.
3. ISO/IEC JTC 1/SC 2 (1998-02-12). Final Text of DIS 8859-10, Information Technology — 8-bit single-byte coded graphic character sets — Part 10: Latin alphabet No. 6 (PDF). ISO/IEC FDIS 8859-10:1998, JTC1/SC2 N2992, WG3 N415.
4. "8-Bit Character Sets - ISO/IEC 10367". Guide to the use of Character Sets in Europe. DKUUG.
5. ECMA (1990-03-01). "Supplementary Set for Latin Alphabets 1, 2 and 5" (PDF). ITSCJ/IPSJ. ISO-IR-155.
6. ISO/IEC JTC 1/SC 2/WG 3 (1998-04-15). "Annex E: Alternative coded representation of the repertoire with no non-spacing diacritical marks". WD 6937, Coded graphic character set for text communication - Latin alphabet (PDF). p. 37. JTC1/SC2/N454.
7. ECMA (1991). "Main differences between the second edition (1985) and the present (third) edition of this ECMA Standard". ECMA-43: 8-Bit Coded Character Set Structure and Rules (PDF) (ECMA Standard) (3rd ed.). p. 23.
8. ECMA (1991). "Unique coding of characters". ECMA-43: 8-Bit Coded Character Set Structure and Rules (PDF) (ECMA Standard) (3rd ed.). p. 10.
9. ISO/IEC/JTC1/SC2/WG3 (1990-04-16). "Basic Box-Drawings Set" (PDF). ITSCJ/IPSJ. ISO-IR-155.
10. Flohr, Guido. "Conversion routines for ISO_10367_BOX". libintl-perl. Locale::RecodeData::ISO_10367_BOX.