3.1.5. Group boundaries
A cable carries a signal between compatible sockets. Check the signal kind, unit and range before choosing its destination.

Inside The Echo Group.
- Enter the Group.
- Drag from a voice output to Group Output's add socket.
- Leave the Group and connect the exposed output socket on its node.
Result: the same signal is available outside the Group boundary.
Inside a Group, the Group Input and Group Output nodes each have an add socket. Drag a cable to an add socket to expose that signal on the Group's node in the parent canvas. See Groups.