pub fn answer_path(list_path: &str) -> Option<String>Expand description
For a rule at list_path that names the list, the path of the answer
beside it: AJT …/AJT/1082 → …/AJT/4465, STS …/C556/1131 →
…/C556/9013. None for any other element — a LIN’s 1082 is a position
number, not a list.