Have been trying to remember to put a piece of paper on my keyboard when I close it but have not being doing it lately. Now I have marks on my screen. I am running out to get a piece of felt ( too linty?) or something to use to protect my screen. What have you guys been using and is there anyway to remove or repair the marks? They look like indentations. Will they fade if I use a cover for the keyboard faithfully? Thanks in advance TmB