Thanks Jake!
I've a few more now lol...
What does the PageNav do (and the tabs within that section)? Can't seem to get what I would think they are to change with them.
What are the 'overlays' and 'tooltips'?
For the 'Forum/Node List', it seems to be when I change most of the options in there, that nothing changes on the index. Which bit is this actually controlling?