Undocumented predicates
The following predicates are exported, but not or incorrectly documented.
- udg_path_count(Arg1, Arg2, Arg3)
- udg_path_count(Arg1, Arg2, Arg3, Arg4)
- rect_path_count(Arg1, Arg2, Arg3, Arg4)
- rect_links(Arg1, Arg2)
- prepare_udg(Arg1)
- udg_path(Arg1, Arg2)
- hamilton_filter(Arg1, Arg2, Arg3)