ars: your post helps, but I am still confused. I think what I'll do is think about it more, and probably make it into a separate post, as you have already answered my original question about where the source code is, which was the point of this thread

I'm thinking for the next question it will be more about how to understand what the hell is going on with createIndex, expecially in Python which has no pointers.

I have actually asked about this, tangentially, here, but never really understood what was going on...
http://www.qtcentre.org/threads/5974...ally-a-pointer