void get_selectables (ARDOUR::framepos_t start, ARDOUR::framepos_t end, double top, double bot, std::list<Selectable *>&);
void get_inverted_selectables (Selection&, std::list<Selectable*>& results);
void get_selectables (ARDOUR::framepos_t start, ARDOUR::framepos_t end, double top, double bot, std::list<Selectable *>&);
void get_inverted_selectables (Selection&, std::list<Selectable*>& results);