I realize what caused them to appear, getting rid of them was the problem. Once they appear, they show up on every document, and there does not seem to be a way to simply turn them off within the program. I'm happy to trash the prefs, but that seems to me to be a roundabout way of dealing with something that started with an inadvertent touch of a button.
What surprised me most though, was that I seem to be alone in this red box world. Thanks for the response.