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(*
Example proof script for HOL Proof General.
$Id$
*)
g `A /\ B ==> B /\ A`;
e DISCH_TAC;
e CONJ_TAC;
e (IMP_RES_TAC AND_INTRO_THM);
e (IMP_RES_TAC AND_INTRO_THM);
val and_comms = pg_top_thm_and_drop();
(* this is not quite like proofs in the other systems,
can anyone tell me a more similar proof in HOL?
I want to split the IMP_RES_TAC into two steps. *)
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