XGF
XGF is and extension of the SGF file format. SGF is the the de-facto standard of Go game files. XuanXuanGo supports almost all of its properties, except for drawing lines, arrows, and a handful of other properties which XuanXuanGo deems to be unnecessary.
Although SGF is very popular, it has some limitations:
- no file description,
- no file type information
- an ordinary game file?
- a joseki file?
- a problem file?
Type information is important, as programs use different ways to open files of different types. The properties for each move in a game are not enough. XuanXuanGo introduces a new file type to address above problems, many new properties for Go problems, Joseki, and Go tutorial materials are added. The new file format is called XGF (XuanXuanGo File), it's binary and more efficient in storage uses.
XGF specification version 0.1 dated 2002-04-07