Hey, thanks a lot for trying it out. About the starfield, did you copy the Globals section to the right side textarea and the mainloop section to the left side? I know It's a bit complicated, thinking about to add examples and save/load. The starfield should work. Yeah, Print, only unofficially supported, as it uses document.write() ontop of the canvas. You can also use Text(x,y,t$)
That said, I just spotted a bad bug and may upload a new version asap. In any case the project can be downloaded and may be debugged, expanded and modded by anybody. I think, most important is a stable set of simple functions, reducing javascript-typical excessive debugging time (from my POV anyway) to a minimum and allowing to actually concentrate on the game/project itself.