Editing Big5 (section)

====HKSCS====
{{Main|Hong Kong Supplementary Character Set}}

[[Hong Kong]] also adopted Big5 for character encoding. However, [[written Cantonese]] has its own characters not available in the normal Big5 character set. To solve this problem, the [[Hong Kong Government]] created the Big5 extensions [[Government Chinese Character Set]] (GCCS) in 1995 and [[Hong Kong Supplementary Character Set]] in 1999. The Hong Kong extensions were commonly distributed as a patch. It is still being distributed as a patch by Microsoft, but a full Unicode font is also available from the Hong Kong Government's web site.

There are two encoding schemes of HKSCS: one encoding scheme is for the Big-5 coding standard and the other is for the [[ISO 10646]] standard. Subsequent to the initial release, there are also HKSCS-2001 and HKSCS-2004. The HKSCS-2004 is aligned technically with the ISO/IEC 10646:2003 and its Amendment 1 published in April 2004 by the International Organization for Standardization (ISO).

HKSCS includes all the characters from the common ETen extension, plus some characters from simplified Chinese, place names, people's names, and Cantonese phrases (including [[Cantonese profanity|profanity]]).

{{as of|2020}}, the most recent edition of HKSCS is HKSCS-2016; however, the last edition of HKSCS to encode all of its characters in Big5 was HKSCS-2008, while the characters added in more recent editions are mapped to ISO 10646 / [[Unicode]] only (as a [[CJK Unified Ideographs]] horizontal glyph extension where appropriate).<ref name="irgn2430">{{cite web|url=https://appsrv.cse.cuhk.edu.hk/~irg/irg/irg53/IRGN2430.pdf|title=Submission of Macao's Vertical Extension (UNC Characters), Horizontal Extension, and IVSes Registration for MSCS|author=Macao Special Administrative Region Government|date=2020-06-11|id=[[ISO/IEC JTC 1/SC 2]]/WG 2 [[Ideographic Research Group|IRGN]] 2430|access-date=2020-07-02|archive-date=2020-06-23|archive-url=https://web.archive.org/web/20200623040740/https://appsrv.cse.cuhk.edu.hk/~irg/irg/irg53/IRGN2430.pdf|url-status=live}}</ref> Additionally, similarly to Hong Kong's situation, there are also characters that are needed by Macao but is neither included in Big5 nor HKSCS, hence, the ''Macao Supplementary Character Set'' was developed, comprising characters not found in Big5 or HKSCS; this, however, is also not encoded in Big5. The first batch of 121 MSCS characters were submitted for inclusion in or mapping to Unicode in 2009,<ref name="irgn1580">{{cite web|url=http://appsrv.cse.cuhk.edu.hk/~irg/irg/irg32/IRGN1580MacaoCharsFromMISCS.pdf|title=Submission of Characters from Macao Information Systems Character Set|author=Computer Chinese Characters Encoding Workgroup|date=2009-06-12|id=[[ISO/IEC JTC 1/SC 2]]/WG 2 [[Ideographic Research Group|IRGN]] 1580|archive-url=https://web.archive.org/web/20150104014324/http://appsrv.cse.cuhk.edu.hk/~irg/irg/irg32/IRGN1580MacaoCharsFromMISCS.pdf|archive-date=2015-01-04|url-status=dead}}</ref> and the first final version of MSCS was established in 2020.<ref name="irgn2430"/>