Throttle Rolling

[Tom_imp]

So I'm studying and keep reading about throttle rolling without any definition. I assume the rolling on the throttle is accelerating and rolling off the throttle is decelerating but I must be wrong or they would call it accelerating/decelerating. What am I missing here?

I can't believe it will be weeks and weeks before I can even get an appointment for a written test. I want to ride after all these years and am short on patience now that the bike is in the garage.