[1] 色々な仕様が参照している ISO/IEC 10646 の版の一覧です。 Unicodeの版も参照してください。
[5] ここまで Korean mess の前です。 Unicode 側で近いのは Unicode 1.1。
[4] これは Korean mess のあった版です。 (Korean mess は Unicode 側では Unicode 2.0。)
[3] T.55 : Use of the universal multiple-octet coded character set (UCS), tsbmail, https://www.itu.int/rec/T-REC-T.55-200806-I/en
ITU-T recommends that for the representation, transmission, interchange, processing, storage and presentation of the written forms of the languages of the world as well as additional symbols, the universal multiple-octet coded character set (UCS) specified in ISO/IEC 10646:2003 "Information technology – Universal Multiple-Octet Coded Character Set (UCS)" be used.
[2] Character Model for the World Wide Web 1.0: Fundamentals ( ( 版)) http://www.w3.org/TR/charmod/#sec-RefUnicode