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simple variables, basic math, resize actor, variables, functions, expert math, actor properties, lists, advanced motion, simple conditionals, miscellaneous, direction and turning, simple motion, advanced control, advanced animation, advanced math, visibility, expert physics, advanced loops, advanced costume handling, simple drawing, simple loops, layers, delays, pen color, graphic effects, simple events, cloning, detect conditions, pen size, shape drawing, screen bounds, simple messaging, program control, platformer controls, pen shade, simple sound playing, conditional loops, stage property, string handling, advanced messaging, platformer automations, platformer basics, topdown basics, timer, advanced physics, conditional wait, advanced events, topdown automations, topdown controls,