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simple variables, basic math, advanced motion, simple conditionals, variables, advanced math, advanced messaging, simple messaging, functions, miscellaneous, advanced animation, level design, detect conditions, expert physics, resize actor, conditional wait, input/output, actor properties, advanced physics, advanced costume handling, cloning, advanced loops, simple events, direction and turning, simple sound playing, screen bounds, simple motion, expert math, text handling, simple loops, pen color, basic physics, advanced control,