CJK Unified Ideographs Extension D explained

Rangestart:	2B740
Rangeend:	2B81F
Script1:	Han
6 0:	222
Note:	^[1] ^[2]

CJK Unified Ideographs Extension D is a Unicode block containing uncommon CJK ideographs for Chinese, Japanese, Korean, and Vietnamese, some of which are in current use. Much smaller than most Unicode blocks for CJK unified ideographs, Extension D consists of characters which were submitted to the Ideographic Research Group as "urgently needed characters" between 2006 and 2009. Characters submitted during the same period which were needed less urgently were included in CJK Unified Ideographs Extension E instead.

The block has hundreds of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD).^{[3] [4]} These sequences specify the desired glyph variant for a given Unicode character.

Block

History

The following Unicode-related documents record the purpose and process of defining specific characters in the CJK Unified Ideographs Extension D block:

		Count	L2 ID	WG2 ID	IRG ID	Document
6.0	U+2B740..2B81D	222
				N3560
					N1532R
					N1305
				doc)
				doc)
				N3831

Notes and References

1. Web site: Unicode character database. The Unicode Standard. 2023-07-26.
2. Web site: Enumerated Versions of The Unicode Standard. The Unicode Standard. 2023-07-26.
3. Web site: Ideographic Variation Database. Unicode Consortium.
4. Web site: UTS #37, Unicode Ideographic Variation Database. Unicode Consortium.