Sometimes, I like to have a nice pretty picture for things, so I made a color chart of these. Among other things, I think the importance of position really jumps out at you. You can find it
here. I can post it as images if people want, but I didn't want to clutter up the thread.
It wasn't obvious to me exactly what "LOT" meant, but I took my best guess.
If anyone has time to double-check this, that would be great .. I'm way too lazy to type something like this up from scratch, so I wrote some stupid code that parsed his post and spat out html, so there could easily be some errors.
Is this useful to anyone else?