Can someone explain to me (In Layman Terms, please, I'm an idiot that knows nothing) how to use the graphical options in snemulds? I've seen the layer numbers pop up on compatibility lists, but don't have a clue how to use them properly. Plus the other options are all greek to me. Any simple explanations are welcome. If you want to use pictures, be my guest. Also, if someone could direct me to a working compatibility list while I'm mentioning them, as I used to look at PH, but they appear to be down. Help a dummy out!