Thank you so much!! I'm really happy to hear you liked the story!
Since several people seem to get stuck on 0004, I might go back and make `hint 0004` give you TWO hint keys instead of one. It's sort of the "final challenge" (0007 is more of a "test what you probably already know" puzzle) so I thought it would be good if it was more complicated than the rest, but at the very least it should be easier when asking for a hint. I don't want anyone getting properly stuck on it so close to the end!