The Great Comma Crisis of 2005 has ended. Plus, I now know all about the mechanical working of Powerbook keys. They've got two crossed loop-shaped bits of plastic which interlace at a jointed-intersection. The one closer to the top of the keyboard slots two small pegs into two small holes and the one close to the bottom of the keyboard has a bar that hooks under a protruding metal catch. Then, the key itself clicks onto the top of the whole thing and sits right on top of the weird jelly-like substances that actually triggers the keystrokes, and that I've probably now permanently polluted with my finger oils (though their already was a surprising amount of hair in there). . .