Hong Kong Supplementary Character Set

The Hong Kong Supplementary Character Set (Chinese: 香港增補字符集; commonly abbreviated to HKSCS) is a set of Chinese characters – 4,702 in total in the initial release—used in Cantonese, as well as when writing the names of some places in Hong Kong (whether in written Cantonese or standard written Chinese sentences). It evolved from the preceding Government Chinese Character Set (政府通用字庫) or GCCS. GCCS is a set of supplementary Chinese characters coded in the user-defined areas of the Big5 character set. It was originally used within the Hong Kong Government and later used by the public. It later evolved into Hong Kong Supplementary Character Set when the characters in the set were submitted to ISO-10646 for coding.

Development history

Due to the inherent differences between standard written Chinese and written Cantonese, the Government of Hong Kong recognised the need for a standardised set of proprietary characters that would allow for the streamlining of electronic communication; at the time, the Big5 Chinese encoding scheme did not contain a vast majority of these characters (some were erroneously cross-listed with similar characters).