An XML application for rendering and indexing Han (CJKV) characters
[2] Character Description Language - Wenlin Guide () http://guide.wenlininstitute.org/wenlin4.3/Character_Description_Language
[3] Character Description Language Community Group () https://www.w3.org/community/cdl/
[6] IRG21, khlee, https://appsrv.cse.cuhk.edu.hk/~irg/irg/irg21/IRG21.htm
Wenlin Variation Sequences depend on Wenlin CDL font support: Wenlin uses a whole plane of Private-Use Area (PUA) characters (U+F0000..U+FFFFD), to define its own Private-Use Variation Selectors (PVS). Wenlin uses these PVS to define Wenlin’s own Private Variation Sequences, used to manage glyph variation in the CDL Database.