[DragonsLover]

Yeah, since there's no manual, it's hard to know.

I'm planning to make my own level editor, but I'm still unsure in what language I'm gonna do it. In the meantime, you can use old Windows editors under a Virtual machine. It works great. I personally have a virtual machine with Win98SE on it and the editors work very well. After I bring the changes, I share the folder containing the levels and copy/paste them on my own machine.