(* NOTATION FOR THE FORMAL SYSTEM λδ ****************************************)
-notation "hvbox( L1 ⦻ * * [ break term 46 R , break term 46 T ] break term 46 L2 )"
+notation "hvbox( L1 ⪤ * * [ break term 46 R , break term 46 T ] break term 46 L2 )"
non associative with precedence 45
for @{ 'RelationStarStar $R $T $L1 $L2 }.