CJK Compatibility

Short description: Unicode character block

CJK Compatibility

Range| U+3300..U+33FF
(256 code points)
Plane| BMP
Scripts| Katakana (88 char.)
Common (168 char.)
Assigned| 256 code points
Unused| 0 reserved code points
Unicode version history
1.0.0| 187 (+187)
1.1| 249 (+62)
4.0| 256 (+7)
Note: [1][2]

CJK Compatibility is a Unicode block containing square symbols (both CJK and Latin alphanumeric) encoded for compatibility with East Asian character sets. In Unicode 1.0, it was divided into two blocks, named CJK Squared Words (U+3300–U+337F) and CJK Squared Abbreviations (U+3380–U+33FF).[3]

Characters U+337B through U+337E are the Japanese era symbols Heisei (㍻), Shōwa (㍼), Taishō (㍽) and Meiji (㍾) (also available in certain legacy sets, such as the "NEC special characters" extension for JIS X 0208, as included in Microsoft's version and later JIS X 0213).[4] The Reiwa era symbol (㋿) is in Enclosed CJK Letters and Months (the CJK Compatibility block having been fully allocated by the time of its commencement).

## Contents

* 1 Block
* 2 History
* 3 See also
* 4 References

## Block

## History

The following Unicode-related documents record the purpose and process of defining specific characters in the CJK Compatibility block:

Version | Final code points[lower-alpha 1] | Count | L2 ID | WG2 ID | Document

|
|
|
|
|

1.0.0 | U+3300..3357, 337B..33DD | 187 |  |  | (to be determined)
| N2956 | Freytag, Asmus (2005-08-12), Unicode Consortium Liaison Report for WG2 Meeting #47
| N2953 (pdf, doc) | Umamaheswaran, V. S. (2006-02-16), Unconfirmed minutes of WG 2 meeting 47, Sophia Antipolis, France; 2005-09-12/15
1.1 | U+3358..3376, 33E0..33FE | 62 |  |  | (to be determined)
4.0 | U+3377..337A, 33DE..33DF, 33FF | 7 | L2/99-353 | N2056 |  Amendment of the part concerning the Korean characters in ISO/IEC 10646-1:1998 amendment 5, 1999-07-29
L2/99-380 |  |  Proposal for a New Work item (NP) to amend the Korean part in ISO/IEC 10646-1:1993, 1999-12-07
L2/99-380.3 |  |  Annex B, Special characters compatible with KPS 9566-97 (To be extended), 1999-12-07
L2/00-084 | N2182 |  Amendment of the part concerning the Korean characters in ISO/IEC 10646-1:1998 amendment 5 (Cover page and outline of proposal L2/99-380), 1999-12-07
L2/99-382 |  | Whistler, Ken (1999-12-09), Comments to accompany a U.S. NO vote on JTC1 N5999, SC2 N3393, New Work item proposal (NP) for an amendment of the Korean part of ISO/IEC 10646-1:1993
L2/00-066 | N2170 (pdf, doc) |  The technical justification of the proposal to amend the Korean character part of ISO/IEC 10646-1 (proposed addition of 79 symbolic characters), 2000-02-10
L2/00-073 | N2167 | Karlsson, Kent (2000-03-02), Comments on DPRK New Work Item proposal on Korean characters
L2/00-285 | N2244 |  Proposal for the Addition of 82 Symbols to ISO/IEC 10646-1:2000, 2000-08-10
| N2282 |  Report of the meeting of the Korean script ad hoc group, 2000-09-21
L2/01-349 | N2374R |  Proposal to add of 70 symbols to ISO/IEC 10646-1:2000, 2001-09-03
L2/01-387 | N2390 | Kim, Kyongsok (2001-10-13), ROK's Comments about DPRK's proposal, WG2 N 2374, to add 70 symbols to ISO/IEC 10646-1:2000
L2/01-388 | N2392 | Kim, Kyongsok (2001-10-16), A Report of Korean Script ad hoc group meeting on Oct. 15, 2001
L2/01-420 |  | Whistler, Ken (2001-10-30), WG2 (Singapore) Resolution Consent Docket for UTC
L2/01-458 | N2407 | Umamaheswaran, V. S. (2001-11-16), Request to Korean ad hoc group to generate mapping tables between ROK and DPRK national standards

1. ↑ Proposed code points and characters names may differ from final code points and names

## See also

* Unicode compatibility characters
* CJK Unified Ideographs
* Katakana (Unicode block)
* Letterlike Symbols

## References

1. ↑ "Unicode character database". The Unicode Standard. https://www.unicode.org/ucd/. Retrieved 2023-07-26.
2. ↑ "Enumerated Versions of The Unicode Standard". The Unicode Standard. https://www.unicode.org/versions/enumeratedversions.html. Retrieved 2023-07-26.
3. ↑ "3.8: Block-by-Block Charts". The Unicode Standard. Unicode Consortium. https://www.unicode.org/versions/Unicode1.0.0/CodeCharts2.pdf.
4. ↑ Lunde, Ken (2019-03-21). "A Brief History of Japan's Era Name Ligatures". CJK Type Blog. Adobe Inc. https://blogs.adobe.com/CCJKType/2019/03/era-name-ligature-history.html.

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