Plane BMP Assigned 472 code points | Scripts Han | |
Range U+F900..U+FAFF(512 code points) Unused 40 reserved code points Source standards KS X 1001:1998Big5IBM 32KS X 1001:2004JIS X 0213ARIB STD-B24KPS 10721-2000 | ||
CJK Compatibility Ideographs is a Unicode block containing Han Ideographs that contained duplicate characters in the South Korean KS X 1001:1998 (U+F900-U+FA0B, 268 characters), Taiwanese Big5 (U+FA0C-U+FA0D, 2 characters), Japanese IBM 32 (CP932 variant; U+FA0E-U+FA2D, 32 characters), South Korean KS X 1001:2004 (U+FA2E-U+FA2F, 2 character), Japanese JIS X 0213 (U+FA30-U+FA6A, 59 characters), ARIB STD-B24 (U+FA6B-U+FA6D, 3 characters) and the North Korean KPS 10721-2000 (U+FA70-U+FAD9, 106 characters) source standards for CJK characters. In order to retain round-trip compatibility with that standard, the CJK Compatibility Ideographs block was created to hold those extra characters. In subsequent versions of the standard, more compatibility ideographs, and even a few regular ideographs that do not have duplicates, have been added to the block.
The block has dozens of ideographic variation sequences registered in the Unicode Ideographic Variation Database (IVD). These sequences specify the desired glyph variant for a given Unicode character.