(* Advanced forward lemma with with simple terms ****************************)
(*
lemma cnuw_fwd_appl_simple (h) (G) (L):
      ∀V,T. ⦃G,L⦄ ⊢ ➡𝐍𝐖*[h] ⓐV.T → 𝐒⦃T⦄.
#h #G #L #V #T #HT
elim (simple_dec_ex T) [ // ] * #p #I #W #U #H destruct
*)