- all of the events, and then return. This isn't needed for
- `TripeCommandDispatcher', but `runservices' wants it.
+ all of the events, and then return. This is used in the method
+ `TripeCommandDispatcher.mainloop', but that's mostly for the benefit of
+ `runservices'; if your I/O watcher has a different main loop, you can
+ drive it yourself.