ISO/IEC 10646:2003 was published in April 2004. The ideographic characters in the ISO/IEC 10646:2003 are the same as those in the ISO/IEC 10646-1:2000 cum ISO/IEC 10646-2:2001.
Mapping Table
A table containing the mapping information among characters of HKSCS-2004 in Big-5, ISO/IEC 10646-1:1993, ISO/IEC 10646-1:2000 and ISO/IEC 10646:2003 can be downloaded by clicking the following:
A. ISO/IEC 10646 Compatibility Table
In some existing ISO/IEC 10646-compliant systems, the code points in the UDAs of Big-5 are directly mapped to the PUA of ISO/IEC 10646 although all of the HKSCS-2004 characters concerned are already defined in ISO/IEC 10646:2003 and its Amendment 1. In order to maintain backward compatibility with such systems, the PUA code points of those HKSCS-2004 characters which are already defined in ISO/IEC 10646 are not reassigned to other characters and are reserved as compatibility points. Moreover, most of the HKSCS-2004 characters defined in the PUA of ISO/IEC 10646-1:1993 or ISO/IEC 10646-1:2000 have become standard characters in ISO/IEC 10646:2003. The compatibility points can also maintain backward compatibility between versions of ISO/IEC 10646.
Tables containing information on the compatibility points in ISO/IEC 10646 can be downloaded by clicking the following:
B. Big-5 Compatibility Table
All the Government Common Character Set (GCCS) characters in the HKSCS-2004 are to retain their original code points. However, the following kinds of GCCS characters are not included in the HKSCS-2004:
Characters found as variants of other characters in Big-5 are unified;
Characters not verifiable.
The HKSCS-2004 includes a number of new characters in addition to characters that were included in the previous HKSCS release.
A table containing the information on the inclusion of characters in different HKSCS releases can be downloaded by clicking the following:
A table containing the Cangjie (倉頡) code information of each character in HKSCS-2004 can be downloaded by clicking the following: