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