Computer scroll/page commands

I’ve recently been using the “computer scroll/page” commands and have found them really useful. When I first started using them the little command box that popped up telling me what commands I could use was quite helpful. However, sometimes that little box gets in the way of what you want to see (especially when I’m comparing two Excel spreadsheets) and so far I haven’t figured out a quick way of closing it. Is there quick and easy way of closing a box besides clicking on it?

A side note: I noticed that the commands in that little pop-up box are different from the ones listed in the instructions of “2. Word tips and techniques” of the Microsoft Word lesson. I think the instructions say something like “please…” instead of “computer…” I couldn’t get the “please…” commands to work.