add Infinite_Set and Zorn back in (since they are no longer included in main HOL image)
(* Title: HOL/MetisExamples/ROOT.ML
ID: $Id$
Author: Lawrence C Paulson, Cambridge University Computer Laboratory
Testing the metis method.
*)
use_thys ["set", "BigO", "Abstraction", "BT", "Message", "Tarski", "TransClosure"];