added hint about writing "x : set xs".
(* Title: HOL/Library/Imperative_HOL.thy
ID: $Id$
Author: John Matthews, Galois Connections; Alexander Krauss, Lukas Bulwahn & Florian Haftmann, TU Muenchen
*)
header {* Entry point into monadic imperative HOL *}
theory Imperative_HOL
imports Array Ref Relational
begin
end