It's not very good...
delays, simple loops, basic math, simple variables, advanced motion, functions, simple events, variables, cloning, visibility, advanced costume handling, simple sound playing, simple conditionals, miscellaneous, layers, direction and turning, input/output, screen bounds, advanced events, music and instruments, advanced loops, detect conditions, simple motion, text handling, simple messaging, graphic effects, resize actor, expert math, string handling, program control, conditional loops, advanced math,