CJK Unified Ideographs 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 ...
containing the most common CJK ideographs used in modern Chinese, Japanese, Korean and Vietnamese characters. When compared with other blocks containing
CJK Unified Ideographs
The Chinese, Japanese and Korean (CJK) scripts share a common background, collectively known as CJK characters. In the process called Han unification, the common (shared) characters were identified and named CJK Unified Ideographs. As of Unicode ...
, it is also referred to as the ''Unified Repertoire and Ordering'' (URO).
The block has hundreds of variation sequences defined for
standardized variants.
It also has tens of 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 block:
References
{{CJK ideographs in Unicode
Unicode blocks