Ideographic Rapporteur Group

The Ideographic Rapporteur Group (IRG)[1] is a subgroup of the ISO/IEC JTC 1/SC 2 working group WG2.

## Overview

IRG is responsible for reviewing proposals for adding new CJK unified ideographs to the Universal Multiple-Octet Coded Character Set (ISO/IEC 10646) and the Unicode Standard, and submitting consolidated proposals for sets of CJK unified ideographs to WG2, which are then processed for encoding in the ISO/IEC 10646 and Unicode standards by SC2 and the Unicode Technical Committee respectively.[2][3] National and liaison bodies of SC2 that participate in IRG include China , Hong Kong, Japan , North Korea, South Korea , Macau, Singapore, Taipei Computer Association, Unicode Consortium, United Kingdom , and Vietnam.

As of Unicode version 11.0, the IRG has been responsible for submitting several blocks of CJK unified ideographs and compatibility ideographs for encoding:[4]

* CJK Unified Ideographs (added in Unicode 1.0)
* CJK Unified Ideographs Extension A (added in Unicode 3.0)
* CJK Unified Ideographs Extension B (added in Unicode 3.1)
* CJK Unified Ideographs Extension C (added in Unicode 5.2)
* CJK Unified Ideographs Extension D (added in Unicode 6.0)
* CJK Unified Ideographs Extension E (added in Unicode 8.0)
* CJK Unified Ideographs Extension F (added in Unicode 10.0)
* CJK Compatibility Ideographs (added in Unicode 1.0)
* CJK Compatibility Ideographs Supplement (added in Unicode 3.1)

## References

1. ↑ "ISO/IEC JTC1/SC2/WG2/IRG: Ideographic Rapporteur Group". http://appsrv.cse.cuhk.edu.hk/~irg/.
2. ↑ "Unicode Standard Annex #45: U-source Ideographs". The Unicode Standard. Unicode Consortium. https://www.unicode.org/reports/tr45/.
3. ↑ "Appendix E: Han Unification History". The Unicode Standard. Unicode Consortium. June 2018. https://www.unicode.org/versions/Unicode11.0.0/appE.pdf.
4. ↑ "Ideographic Rapporteur Group". Office of the Government Chief Information Officer. http://www.ogcio.gov.hk/en/business/tech_promotion/ccli/iso_10646/irg.htm.

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Usage|

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Related standards|

* Common Locale Data Repository (CLDR)
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Symbols|

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