-ADD_ACKNOWLEDGER (System_start_delimiter_engraver, staff_symbol);
-ADD_ACKNOWLEDGER (System_start_delimiter_engraver, system_start_delimiter);
+
+void
+System_start_delimiter_engraver::boot ()
+{
+ ADD_ACKNOWLEDGER (System_start_delimiter_engraver, staff_symbol);
+ ADD_ACKNOWLEDGER (System_start_delimiter_engraver, system_start_delimiter);
+}