Marco, some of your questions probalbly are answered in Roman Czyborra's WWW pages, particularly in - <http://czyborra.com/unicode/standard.html>, - <http://czyborra.com/charsets/iso646.html>, - <http://czyborra.com/charsets/iso8859.html>, - <http://czyborra.com/charsets/cjk.html>, - <http://czyborra.com/charsets/codepages.html>.
> - When did Unicode and ISO 10646 merge? The merger was initiated by an informal meeting of Unicode, and WG2 members, during the JTC1/SC2/WG2 meeting in San Francisco, Cali- fornia, USA, in May 1991. At that time, ISO DIS 10646 (the 1st one) was still in ballot, so no formal discussion, let alone an agreement, was allowed by JTC1's rules. By mid-July, DIS 10646 was formally voted down (P-members: 8 YES, 11 NO, 2 abstained; O-members: 1 YES, 3 NO, 0 abstained). 9 out of 14 NO votes mentioned the merger ("only one universal code"), in their national comments. The merger, and the basic architecture, were agreed on, at the ISO-IEC JTC1/Sc2/WG2 meeting in Geneva, Switzerland, August 19th through 23rd, 1991 In Octobre 1991, ISO SC2 plenary (in Rennes, France) unanimously authorized WG2 to issue a new DIS 10646 in January 1992 for a 4-month (i. e. shortened) vote. Best wishes, Otto Stolz