Let's face it: J1E, while supremely useful, is almost completely lacking in documentation. Most of what it does can be inferred by reading through the various notes files of the Jazz Graphics Pack, but that can be confusing sometimes because it uses J1CS terminology. With J1E's new release a renewed burst of interest can only be expected, so if you have any questions about how to use any aspect of the program at all, feel free to post them in the thread and experienced J1E users will be happy to answer them for you.
(by which I basically mean me, because I haven't actually asked anyone about this, but if others want to chime in then feel free!)