I'm trying to figure if there's any way I can use (say) monads to collect values from a Functor. For example, suppose I have a tree of some values that supports fmap, is there any way I can use the fmap function to collect a list of all the node values? #g ------------------- Graham Klyne <GK@NineByNine.org> PGP: 0FAA 69FF C083 000B A2E9 A131 01B9 1C7A DBCA CB5E