Remember this room, we were going to paint over the wallpaper. Nope, it was too loose. So we pulled the paper down to find out that all of the backing stayed on the wall. Drat. So 2-3 hours of yesterday, as soaking and pulling down wallpaper backing. I thought I was done with all of that. Hopefully I really am now. What you see as lines in the walls are the bumps where the lower layers of wallpaper are showing through. (Which I am not taking down.)