[mythtv] some comments

[Thomas M. Pluth]

> i was lookin the code of some complex sources of
> mythtv (such as main.cpp) and i wonder why is that
> there are no comments of the code (or very few).
> i'm tryin' to understand it (the code, i mean) and i
> realy can't!
> ¿thus anybody have a diagram of the layers on myht?
> it's a real pain in the ass to seat in front of the
> machine and try to debug something so complex.
> any help will be welcome.
> pedro.
> yes, my english sucks, i know that already!
>

I agree.  Comments would be nice.