Editing Big5 (section)

===A more detailed look at the organization===
In the original Big5, the encoding is compartmentalized into different zones:
{| class="wikitable"
|-
| {{mono|0x8140}} to {{mono|0xA0FE}}|| Reserved for user-defined characters 造字
|-
| {{mono|0xA140}} to {{mono|0xA3BF}}|| "Graphical characters" 圖形碼
|-
| {{mono|0xA3C0}} to {{mono|0xA3FE}}|| Reserved, ''not'' for user-defined characters 
|-
| {{mono|0xA440}} to {{mono|0xC67E}}|| Frequently used characters 常用字
|-
| {{mono|0xC6A1}} to {{mono|0xC8FE}}|| Reserved for user-defined characters
|-
| {{mono|0xC940}} to {{mono|0xF9D5}}|| Less frequently used characters 次常用字
|-
| {{mono|0xF9D6}} to {{mono|0xFEFE}}|| Reserved for user-defined characters
|}
The "graphical characters" actually comprise punctuation marks, partial punctuation marks (e.g., half of a dash, half of an ellipsis; see below), [[dingbat]]s, foreign characters, and other special characters (e.g., presentational "full width" forms, digits for [[Suzhou numerals]], [[bopomofo|zhuyin fuhao]], etc.)

In most vendor extensions, extended characters are placed in the various zones reserved for user-defined characters, each of which are normally regarded as associated with the preceding zone. For example, additional "graphical characters" (e.g., punctuation marks) would be expected to be placed in the {{mono|0xa3c0}}–{{mono|0xa3fe}} range, and additional logograms would be placed in either the {{mono|0xc6a1}}–{{mono|0xc8fe}} or the {{mono|0xf9d6}}–{{mono|0xfefe}} range. Sometimes, this is not possible due to the large number of extended characters to be added;
for example, [[Cyrillic]] letters and Japanese [[kana]] have been placed in the zone associated with "frequently-used characters".