仕様書

• [1] UAX #44: Unicode Character Database (2010-10-09 06:36:55 +09:00 版) http://www.unicode.org/reports/tr44/#Noncharacter_Code_Point
• [2] UAX #44: Unicode Character Database, 2020-03-06T22:23:11.000Z, 2020-10-21T08:49:23.551Z https://www.unicode.org/reports/tr44/#Property_Invariants