vector<RefPtr<Gtk::Action> > ActionManager::write_sensitive_actions;
vector<RefPtr<Gtk::Action> > ActionManager::region_list_selection_sensitive_actions;
vector<RefPtr<Gtk::Action> > ActionManager::plugin_selection_sensitive_actions;
-vector<RefPtr<Gtk::Action> > ActionManager::region_selection_sensitive_actions;
vector<RefPtr<Gtk::Action> > ActionManager::track_selection_sensitive_actions;
vector<RefPtr<Gtk::Action> > ActionManager::point_selection_sensitive_actions;
vector<RefPtr<Gtk::Action> > ActionManager::time_selection_sensitive_actions;