| CJK Unified Ideographs Extension A | |
|---|---|
| Range | U+3400..U+4DBF (6,592 code points) |
| Plane | BMP |
| Scripts | Han |
| Assigned | 6,592 code points |
| Unused | 0 reserved code points |
| Unicode version history | |
| 3.0 (1999) | 6,582 (+6,582) |
| 13.0 (2020) | 6,592 (+10) |
| Unicode documentation | |
| Code chart ∣ Web page | |
| Note: [1][2] Range used for Hangul syllables prior to Unicode 2.0 (see Hangul (obsolete Unicode block)). | |
CJK Unified Ideographs Extension-A is a Unicode block containing rare Han ideographs submitted to the Ideographic Research Group between 1992 and 1998, plus ten ideographs added in Unicode 13.0 which had previously been mistakenly unified with others.[3]
The block has dozens of variation sequences defined for standardized variants.[4]
It also has thousands of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD).[5][6] These sequences specify the desired glyph variant for a given Unicode character.
- ^ "Unicode character database". The Unicode Standard. Retrieved 2023-07-26.
- ^ "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2023-07-26.
- ^ "18.1: Han (§ Blocks Containing Han Ideographs)" (PDF). The Unicode Standard: Core Specification. Version 15.0. Unicode Consortium. pp. 741–744. 2022. ISBN 978-1-936213-32-0.
- ^ "Unicode Character Database: Standardized Variation Sequences". The Unicode Consortium.
- ^ "Ideographic Variation Database". Unicode Consortium.
- ^ "UTS #37, Unicode Ideographic Variation Database". Unicode Consortium.