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