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simple variables, simple events, expert physics, simple conditionals, conditional wait, simple loops, layers, functions, topdown basics, advanced math, topdown controls, basic math, miscellaneous, topdown automations, direction and turning, actor properties, advanced motion, advanced costume handling, detect conditions, graphic effects, resize actor, advanced events, simple motion, platformer automations, advanced animation, touching actor, platformer basics, advanced messaging, delays, simple messaging,