解释
Code2002 is an experimental Plane 2 Unicode based font. The first 255 code points are as in ISO-8859-001. The balance of the code points are from Plane 2, an astral plane of Unicode. Plane 2 is comprised of CJK Extension B, consisting of approximately 43,000 CJK characters which are not encoded in Plane 0, the Basic Multilingual Plane of Unicode.