Due to size concerns, EUC-TW (Extended Unix Character), CCCII
(Chinese Character Code for Information Interchange), BIG5PLUS
(CMEX's Big5+) and BIG5EXT (CMEX's Big5e) are distributed separately
on CPAN, under the name the Encode::HanExtra manpage. That module also contains
extra China-based encodings.
Since the original big5encoding (1984) is not supported anywhere
(glibc and DOS-based systems uses big5 to mean big5-eten; Microsoft
uses big5 to mean cp950), a conscious decision was made to alias
big5 to big5-eten, which is the de facto superset of the original
big5.
The CNS11643encoding files are not complete. For common CNS11643
manipulation, please use EUC-TW in the Encode::HanExtra manpage, which contains
planes 1-7.
The ASCII region (0x00-0x7f) is preserved for all encodings, even
though this conflicts with mappings by the Unicode Consortium. See