Click the "green flag" to reset points, "new point" to add a point at the end of the chain, "remove point" to remove the last point in the chain the eyeball to show/hide the "track" This was a shower thought aimed at improving the animation workflow. If I ever return to this project, I would add multiple of these "tracks" to control limbs.
Thanks to the project https://scratch.mit.edu/projects/936910908/ for the bezier curves.
