Set Bullet Behavior "Strict Subproofs".
Set Implicit Arguments.
Require Export FcEtt.tactics.
Require Export FcEtt.imports.
Require Export FcEtt.ett_inf.
Require Export FcEtt.ett_ott.
Require Export FcEtt.ett_ind.
Require Export FcEtt.fix_typing.
(* --------------------------------------------------- *)

(* ------------------------------------------ *)
Lemma toplevel_closed : forall F a A, binds F (Ax a A) toplevel ->
Typing nil a A.