[3] 関連: BinHex
[4] RFC 4450: Getting Rid of the Cruft: Report from an Experiment in Identifying and Reclassifying Obsolete Standards Documents, 2023-12-02T08:22:42.000Z, 2023-12-02T08:29:49.032Z https://www.rfc-editor.org/rfc/rfc4450.html#appendix-A