(* NOTATION FOR THE FORMAL SYSTEM λδ ****************************************)
-notation "hvbox( ⓑ { term 46 I } break term 55 T. break term 55 L )"
+notation "hvbox( ⓑ[ term 46 I ] break term 55 T. break term 55 L )"
non associative with precedence 55
for @{ 'SnBind2 $I $T $L }.