I tweaked the language, thanks for pointing that out. Obviously JavaScript is capable of very real systems and many of the potential applications of this work. Regarding the timeline, I'm hoping soon, but it's going to depend on where I want to take this codebase; I still haven't really decided, and it will depend in large part on what kind of interest I see. The multiple subpaths question is of course not a problem with the spline itself but whether the test app has a sophisticated enough document model to manage multiple path objects.