[Maggid]

Somehow I've got gray solid-line L-shaped markers at the margins in all four corners by default in every Word doc. I don't know what they're called or how they got there. Other than being visually annoying, they may be related to some document headers being cut off the top of the fonts in the Print View. In fact, they only show up in Print View.

I've tried changing the document grid, the margins in page layout - nothing works so far. I invite all ideas.