- virtual ~Staff_symbol_engraver();
- virtual void acknowledge_grob (Grob_info);
- virtual void finalize();
- virtual void initialize();
+ virtual void start_spanner ();
+ virtual void stop_spanner ();
+
+ void stop_translation_timestep ();
+ virtual ~Staff_symbol_engraver ();
+ DECLARE_ACKNOWLEDGER (grob);
+ DECLARE_TRANSLATOR_LISTENER (staff_span);
+ virtual void finalize ();
+ void process_music ();