added "metis_advisory_simp" option to orient as many equations as possible in Metis the right way (cf. "More SPASS with Isabelle")
(* Title: HOL/HOLCF/IOA/Storage/Action.thy
Author: Olaf Müller
*)
header {* The set of all actions of the system *}
theory Action
imports Main
begin
datatype action = New | Loc nat | Free nat
lemma [cong]: "!!x. x = y ==> action_case a b c x = action_case a b c y"
by simp
end