proposition: Lemma compat6_compatible' clo (COM: compatible6 gf clo): compatible'6 clo.
proof: Proof. destruct COM. econstructor; [apply compat6_mon0|]. intros. split. - eapply compat6_mon0; intros; [apply PR| apply PR0]. - apply compat6_compat0. eapply compat6_mon0; intros; [apply PR| apply PR0]. Qed.
imports: Program.Basics Paco(paco6 pacotac)