and Current Status of ISO 10646
ISO 10646 is
defined by ISO/IEC JTC1/SC2/WG2. ISO/IEC JTC1 is the Joint Technical
Committee on Information Technology, which was formed by an agreement
between the International Electrotechnical Commission (IEC) and
the International Organization for Standardization (ISO). It is
created to cover IT related standards in both the IEC and ISO. ISO/IEC
JTC1/SC2 is the international standardization subcommittee for coded
character sets. It is set up by ISO/IEC JTC1. There is a working
group under SC2 called ISO/IEC JTC1/SC2/WG2. It is an international
standardization working group for the coded character set UCS -
the Universal Multiple-Octet Coded Character Set - ISO/IEC 10646.
ISO/IEC JTC1/SC2/WG2/IRG, or IRG for short, is the Ideoraph Rapporteur
Group to handle work related to ideographic characters in ISO 10646.
The Year 2000 version of ISO 10646, ISO/IEC 10646-1:2000, was released
in October 2000 which includes 6,582 additional ideographic characters
(in Extension A, see next paragraph) in addition to 20,902 ideographic
characters already defined in ISO/IEC 10646-1:1993. All characters
in the HKSCS which are not included in ISO 10646 already have been
submitted to the IRG for inclusion in future releases of ISO 10646.
Ideograph character extensions to ISO/IEC 10646-1:1993 are carried
out in phases, which referred to Extension A, Extension B, Extension
C, and etc. Extension A, which contains 6,582 ideographic characters,
was released in October 2000. Extension B is published in ISO/IEC
10646-2:2001 with ideographic characters mainly from Kang Xi Dictionary,
Han Yu Da Zi Dian and Han Yu Da Ci Dian. Currently, the IRG is working
on Extension C and publication date is yet to be determined.