Setting up the use of this module.

§1. This section simply sets up the module in ways expected by foundation, and contains no code of interest. The following constant exists only in tools which use this module:

define PROBLEMS_MODULE TRUE

§2. Note that this module uses its fellow services module syntax, and adds the following annotation to the syntax tree:

enum problem_falls_under_ANNOT  parse_node: what heading the sentence falls under

DECLARE_ANNOTATION_FUNCTIONS(problem_falls_under, parse_node)
MAKE_ANNOTATION_FUNCTIONS(problem_falls_under, parse_node)

§3. Like all modules, this one must define a start and end function.

void ProblemsModule::start(void) {
    Annotations::allow_for_category(L2_NCAT, problem_falls_under_ANNOT);
    Annotations::declare_type(problem_falls_under_ANNOT,
        ProblemsModule::write_problem_falls_under_ANNOT);
}
void ProblemsModule::end(void) {
}
void ProblemsModule::write_problem_falls_under_ANNOT(text_stream *OUT, parse_node *p) {
    if (Node::get_problem_falls_under(p))
        WRITE("{under: '%W'}", Node::get_text(Node::get_problem_falls_under(p)));
}