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visibility, basic math, simple variables, simple conditionals, simple events, delays, simple loops, advanced motion, simple messaging, input/output, resize actor, functions, simple motion, direction and turning, simple sound playing, screen bounds, cloning, variables, advanced costume handling, miscellaneous, advanced events, detect conditions, layers, expert math, music and instruments, text handling, advanced loops, simple costume handling, program control, graphic effects, string handling, conditional loops, advanced math, video control,