It's a feature in Microsoft Word, Mrs. Duck. When you start to do something at all tricky (like begin a new paragraph), it will pop up and offer you suggestions on how to do it. Very annoying. You can set it to various different personnae (paperclip, diamond, sphere, whatever), each of which comes with a higher or lower "sensitivity" level -- meaning the thing you are about to do can get more complex (creating a new page, e.g.) without the thing popping up.

If you don't use Microsoft Word, or if your version is older than the ones which first included the blasted paperclip, then you won't see it.

I have no idea if it turns up in Macintosh versions of MSW. Mac users?

Alex