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+(*
+ Example proof script for Lego Proof General.
+
+ $Id$
+*)
+
+Module example Import lib_logic;
+
+Goal {A,B:Prop}(A /\ B) -> (B /\ A);
+intros;
+Refine H;
+intros;
+andI;
+Immed;
+Save and_comms;