CJK Unified Ideographs Extension-A is a
Unicode block
A Unicode block is one of several contiguous ranges of numeric character codes (code points) of the Unicode character set that are defined by the Unicode Consortium for administrative and documentation purposes. Typically, proposals such as the ad ...
containing rare Han ideographs.
The block has dozens of variation sequences defined for
standardized variants.
It also has thousands of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD).
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 A block:
References
Unicode blocks
{{CJK ideographs in Unicode