-ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, item);
-ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, pure_from_neighbor);
+void
+Pure_from_neighbor_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, item);
+ ADD_ACKNOWLEDGER (Pure_from_neighbor_engraver, pure_from_neighbor);
+}
+