proposition: Lemma compat8_compatible' clo (COM: compatible8 gf clo): compatible'8 clo.
proof: Proof. destruct COM. econstructor; [apply compat8_mon0|]. intros. split. - eapply compat8_mon0; intros; [apply PR| apply PR0]. - apply compat8_compat0. eapply compat8_mon0; intros; [apply PR| apply PR0]. Qed.
imports: Program.Basics Paco(paco8 pacotac)