A few people pointed out that help() can cause problems, specifically
when the help string is really big, so I've internalised it and injected
my own help() function into the interpreter which pages the output, but
it's pretty ghetto so I'm open to suggestions for improvement.
That said, it's pretty obvious that scrolling up and down (like less)
would be the main requested improvement so I should get to work on that
at some point.
Bob Farrell