[Tutor] Let imported module access calling program

[Shrutarshi Basu]

The event handling approach looks interesting and isn't something that
I haven't encountered before. Could you to point me somewhere I could
learn more about it? I've already read the papers published by the
Pyro group and looked at some of their sample programs. I am trying to
give the user a similar experience, but using an modular instead of
class-based architecture. But I think I will go look into some of the
source to get an idea for what they have done (though in the end i
will probably implement a different system).
Thanks again for all your help,
Basu