* 仕様書

[REFS[
- [1] [CITE@en-us[UAX #11: East Asian Width]] ([TIME[2015-06-12 05:19:39 +09:00]] 版) <http://www.unicode.org/reports/tr11/>
- [2] [CITE@en-us[UAX #44: Unicode Character Database]], [TIME[2020-03-06T22:23:11.000Z]], [TIME[2020-10-21T06:24:49.510Z]] <https://www.unicode.org/reports/tr44/#Default_Values_Table>
- [3] [CITE@en-us[UAX #44: Unicode Character Database]], [TIME[2020-03-06T22:23:11.000Z]], [TIME[2020-10-21T06:31:45.938Z]] <https://www.unicode.org/reports/tr44/#Complex_Default_Values>
- [4] [CITE@en-us[UAX #44: Unicode Character Database]], [TIME[2020-03-06T22:23:11.000Z]], [TIME[2020-10-21T08:24:32.981Z]] <https://www.unicode.org/reports/tr44/#Derived_Extracted>
]REFS]