I understand the weight and plastic type specs on a disc and appreciate the differences they make. I also understand speed/glide/turn/fade, but I've been seeing an additional designation among players that I haven't seen, or at least noticed before until the last few weeks and don't have a clue what it's about. It's the "times" thing, usually seen on the message boards as "11x," or "9x" or so on. What's that about?