I'm not sure if it has any uses! I just made it to try out some concepts for a programming environment that isn't entirely centered around text files. Since it was an experiment I'd say some parts turned out to not be that great but others are pretty interesting. Overall it isn't obvious to me how to get anything useful done with it *yet*.
If you mess around with it and find something useful you could think of to do with it let me know. The best thing I've gotten out of it was just a really nice environment for "hands on" learning about functional programming and Lisp in particular.