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expert physics, resize actor, advanced motion, basic math, simple events, delays, advanced events, visibility, direction and turning, simple loops, graphic effects, simple motion, detect conditions, simple variables, variables, simple conditionals, layers, conditional loops, cloning, pen size, pen color, simple drawing, shape drawing, advanced costume handling, text handling, input/output, conditional wait, simple costume handling, advanced physics, screen bounds, advanced math, basic physics, advanced messaging, simple sound playing,