CJK Compatibility

The CJK Compatibility group is a group of Unicode characters that were included for compatibility with existing character sets. These characters are not necessary for the modern standardization of Chinese, Japanese, and Korean (CJK) scripts, but they are included in Unicode to ensure that older texts that used these characters can still be accurately represented. The group includes a range of characters that were used for phonetic transcription, punctuation, and other purposes in older character sets.