VISIT proof_state_info.lean
SYNC 9
import logic
open tactic
theorem tst (a b c : Prop) : a → b → a ∧ b :=
begin
  intros [Ha, Hb],
  apply and.intro,
  apply Ha,
  apply Hb,
end
WAIT
INFO 5 17
INFO 6 17
INFO 7 10