By "onscreen keyboard" I mean charmap.exe, and apparently the "non breaking space" I chose was interpreted as asterisks...
I think the keyboard will be fine though, I've had lots of experience spilling things on model M's before, and I'm pretty sure I unplugged before it caused any damage. It was making all sorts of ctrl combos whenever I pressed anything between F and J, but I've had worse, and if I'm not mistaken, my 1996 M13 probably has the lexmark drain holes. I've unplugged it pretty quickly, wrapped it in a towel, and put it in the same space as my silica gel collection, so I think it'll be okay. (believe it or not I've actually killed a few M's)
Oh, and as for restoring yellowed keyboards, I was going to point out how great peroxide is... For under $20 you can brew up a batch of peroxide goo that'll turn a few dozen yellow keyboards bright white again.