boost::shared_ptr<ARDOUR::Bundle> bundle;
/** IO whose ports are in the bundle, or 0. This is so that we can do things like adding
ports to the IO from matrix editor menus. */
boost::shared_ptr<ARDOUR::Bundle> bundle;
/** IO whose ports are in the bundle, or 0. This is so that we can do things like adding
ports to the IO from matrix editor menus. */