proposition: Lemma compat0_wcompat clo (CMP: compatible0 clo): wcompatible0 clo.
proof: Proof. econstructor. apply CMP. intros. apply CMP in PR. eapply gf_mon. apply PR. intros. apply gpaco0_clo, PR0. Qed.
imports: Program.Basics Paco(paco0 pacotac)