void set_activation (ARDOUR::RouteGroup *, bool);
void edit_group (ARDOUR::RouteGroup *);
void subgroup (ARDOUR::RouteGroup *, bool, ARDOUR::Placement);
+ void un_subgroup (ARDOUR::RouteGroup *);
void activate_all ();
void disable_all ();
void remove_group (ARDOUR::RouteGroup *);