{mappend @<function> @<list> \&rest @<more-lists> @> @<result-list>}
\end{describe}
+\begin{describe}{fun}
+ {distinguished-point-shortest-paths @<root> @<neighbours-func>
+ @> @<list>}
+\end{describe}
+
\begin{describe}{cls}{inconsistent-merge-error (error) \&key :candidates}
\end{describe}