CJK Compatibility
CJK Compatibility is a Unicode block containing square symbols encoded for compatibility with east Asian character sets.
Characters U+337B through U+337E are the Japanese era symbols Heisei, Shōwa, Taishō and Meiji . The Reiwa era symbol is in Enclosed CJK Letters and Months.Block
History
The following Unicode-related documents record the purpose and process of defining specific characters in the CJK Compatibility block:
