docs are unclear on how to enable "autopilot support"

I read
http://unity.ubuntu.com/autopilot/tutorial/running_ap.html

to learn more about autopilot. One paragraph says:

"Selecting a connection from the drop-down box allows you to inspect different autopilot-supporting applications. If Unity is running, the Unity connection should always be present. If other applications have been started with the autopilot support enabled, they should appear in this list as well. Once a connection is selected, the introspection tree is rendered in the left-hand pane, and the details of each object appear in the right-hand pane."

The parts "autopilot-supporting applications" and "applications [...] with the autopilot support enabled" are very unclear.
The docs should state how to enable autopilot support in an application, and should describe what that really means.

At the moment, I guess it really means "the application makes a dbus connection available for introspection" - but I can't really know.