extern std::vector<Glib::RefPtr<Gtk::Action> > track_selection_sensitive_actions;
extern std::vector<Glib::RefPtr<Gtk::Action> > point_selection_sensitive_actions;
extern std::vector<Glib::RefPtr<Gtk::Action> > time_selection_sensitive_actions;
extern std::vector<Glib::RefPtr<Gtk::Action> > track_selection_sensitive_actions;
extern std::vector<Glib::RefPtr<Gtk::Action> > point_selection_sensitive_actions;
extern std::vector<Glib::RefPtr<Gtk::Action> > time_selection_sensitive_actions;