Studio Theme PDF / Documentation

I hear there's a pretty helpful PDF that documents and maps out the entire studio theme, but I've been digging and can't seem to find it. Have you got a link to it anyplace? Can you post it here? I'm in need.

We're trying to figure out how to get some more widgetized areas into the homepage and want to make sure we understand how everything comes together before we start fiddling.

Thanx in advance for your help.