-- BEGINWAIT
-- ENDWAIT
-- BEGINSHOW


theorem tst (a b c : Prop) : a → b → a ∧ b :=
begin
  info,
  intros [Ha, Hb],
  state,
  apply and.intro,
  apply Ha,
  apply Hb,
end
-- ENDSHOW
-- BEGINWAIT
-- ENDWAIT
-- BEGININFO STALE
-- ENDINFO