Long time, first time. I've just started a project where I'm going to attempt to move an element along an SVG Motion Path.  Ive made some progress but I need certain things to happen at specific points on this path.  Is there some type of callback that i can say "at point 283, run this function" then "at point 400, do this other thing?" and so on...   I also don't get why i need to use the offset but the first part is, by far, my biggest hurdle.     See t