+(**************************************************************************)
+(* ___ *)
+(* ||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 *)
+(* *)
+(**************************************************************************)
+
+(* GENERAL NOTATION USED BY THE FORMAL SYSTEM λδ ****************************)
+
+notation < "hvbox( { term 46 hd1, break term 46 hd2 }⨮ break term 46 tl )"
+ non associative with precedence 47
+ for @{ 'OplusRight $S1 $S2 $hd1 $hd2 $tl }.
+
+notation > "hvbox( { term 46 hd1, break term 46 hd2 }⨮ break term 46 tl )"
+ non associative with precedence 47
+ for @{ 'OplusRight ? ? $hd1 $hd2 $tl }.
+(*
+(**) fix pair notation
+notation > "hvbox( { term 46 hd1, break term 46 hd2 }⨮{ break term 46 S1, break term 46 S2 } break term 46 tl )"
+ non associative with precedence 47
+ for @{ 'OplusRight $S1 $S2 $hd1 $hd2 $tl }.
+*)