CJK Compatibility Ideographs

Sources for the original collection of CJK Compatibility Ideographs include:

• South Korean KS X 1001 (U+F900–U+FA0B, 268 characters)
• Taiwanese Big5 (U+FA0C–U+FA0D, 2 characters)
• "IBM 32": 32 Japanese characters from IBM (U+FA0E–U+FA2D; see below)

In ensuing versions of the standard, more characters have been added to the block from:

• South Korean KS X 1001 (U+FA2E–U+FA2F, 2 characters)
• Japanese JIS X 0213 (U+FA30–U+FA6A, 59 characters)
• Japanese ARIB STD-B24 (U+FA6B–U+FA6D, 3 characters)
• North Korean KPS 10721-2000 (U+FA70–U+FAD9, 106 characters)

IBM Japanese double-byte EBCDIC includes several kanji which do not exist in, or do not round-trip from, JIS X 0208. These were included as gaiji in extensions to Shift JIS and EUC-JP from IBM (e.g. code page 942), NEC, the Open Software Foundation, and Microsoft (e.g. Windows code page 932). However, they were not used as a source for the original Unified Repertoire and Ordering (URO). Instead, 32 of the IBM extension kanji, those which had not been included in the URO from other sources, were included in the CJK Compatibility Ideographs block in the range U+FA0E–U+FA2D.

Of these 32 characters:

• 19 are unifiable with characters in the URO, and are therefore compatibility ideographs in the strict sense.
• One ({{unichar|FA20}}) is a kyūjitai form of a kokuji whose extended shinjitai form exists in the URO ({{unichar|8612}}). Both are hyōgai kanji, and are variants of the jinmeiyō kanji {{unichar|8429}} (i.e. Kummerowia). U+FA20 was assigned a normalisation to U+8612, even though the 龜 and 亀 components, while both forms of radical 213, are not usually considered unifiable.{{citation|mode=cs1 |url=https://www.unicode.org/irg/docs/n2746-Complete.pdf#page=182 |section=UCS Ideograph Non-Unifiable Component Variations Summary List (NUCV) |date=2024-11-19 |title=UCV & NUCV Lists |author=Ideographic Research Group |author-link=Ideographic Research Group |id=ISO/IEC JTC1/SC2/WG2/IRG N2746}}
• The remaining 12 are kokuji characters which are actually unified ideographs (with the {{code|Unified_Ideograph}} property, and which do not change upon normalisation). In spite of their inclusion in the CJK Compatibility Ideographs block and their algorithmically generated character names beginning with "{{code|CJK COMPATIBILITY IDEOGRAPH}}", they are not duplicates of characters in the original CJK Unified Ideographs block in any respect;{{cite web | url=https://www.unicode.org/Public/UCD/latest/ucd/PropList.txt | title=PropList.txt | publisher=Unicode Consortium}}{{cite web |url=https://www.unicode.org/notes/tn27/ |quote=These 12 characters are unified CJK ideographs, not compatibility ideographs, despite their names. |title=Known Anomalies in Unicode Character Names |id=Unicode Technical Note #27 |publisher=Unicode Consortium |date=2021-06-14 |first1=Asmus |last1=Freytag |first2=Rick |last2=McGowan |first3=Ken |last3=Whistler}} 11 of these 12 are completely non-duplicate, while {{unichar|FA23}} was later unintentionally duplicated in CJK Unified Ideographs Extension B as {{unichar|27EAF}}. They are as follows:

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{{Unicode chart CJK Compatibility Ideographs}}

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

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• CJK Compatibility Ideographs Supplement

{{reflist}}

{{CJK ideographs in Unicode}}

Category:Unicode blocks