- virtual void acknowledge_element (Score_element_info);
- virtual void do_removal_processing();
- virtual void do_creation_processing();
-
+protected:
+ 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 ();