I think he may want to go even further and basically have a debug switch. When he hits it, then the next line of code is executed, then the robot waits again.
I'm not sure if this is possible on the RC. On a computer, debuggers typically work by hooking into a software interrupt (don't remember which one right now) and stopping execution when it is activated. I'm not sure if a similar thing exists on the RC, but if it does and you get that working, you'd be my hero.
