Over the years, I have occassionally received an e-mail asking why "editing marks" sometimes show up in a word document. Personally I like to see where all my marks are because it helps me edit and keep spacing consistent, etc.
However, for some people it drives them crazy, and they can't stand to see all the editing marks. In order to remove the editing marks, you can simply click on the symbol like the picture above if you see it in your
tool bar. Otherwise,
You can display the show/hide button on your toolbar, by going to Tools/customize/command tab/click on View under categories/ and drag the Show All symbol (picture above) to your tool bar. From then on, all you have to do is click on that show/hide button to either show editing marks or hide them :)