Undocumented predicates
The following predicates are exported, but not or incorrectly documented.
- gen_argument_chains(Arg1, Arg2)
- argument_chain(Arg1, Arg2)
- unlinked_arg(Arg1, Arg2, Arg3, Arg4)
- arg_id(Arg1, Arg2, Arg3, Arg4, Arg5, Arg6)
- lead_to_root(Arg1)
- linked_arg(Arg1, Arg2)