improved tracing of permutative rules.
(* Title: HOLCF/Fun2.thy
ID: $Id$
Author: Franz Regensburger
Copyright 1993 Technische Universitaet Muenchen
Class Instance =>::(term,po)po
*)
Fun2 = Fun1 +
(* default class is still term !*)
instance fun :: (term,po)po (refl_less_fun,antisym_less_fun,trans_less_fun)
end