proposition: Lemma compat9_wcompat clo (CMP: compatible9 clo): wcompatible9 clo.
proof: Proof. econstructor. apply CMP. intros. apply CMP in PR. eapply gf_mon. apply PR. intros. apply gpaco9_clo, PR0. Qed.
imports: Program.Basics Paco(paco9 pacotac)