+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+include "ng_pts.ma".
+
+axiom A : Type.
+
+axiom a : A.
+axiom b : A.
+
+axiom B : Type.
+
+axiom c : B.
+axiom d : B.
+
+
+notation "#" with precedence 90 for @{ 'foo }.
+interpretation "a" 'foo = a.
+interpretation "b" 'foo = b.
+interpretation "c" 'foo = c.
+interpretation "d" 'foo = d.
+
+alias symbol "foo" = "c".
+alias symbol "foo" = "b".
+alias symbol "foo" = "d".
+alias symbol "foo" = "b".
+
+lemma xx : ∀P: A → B → Prop. P # #. (* NON STAMPA GLI ALIAS *)
+