So, I noticed some dust on my monitor (NEC FP950) today and decided to give it a once over with a tissue, but there were a few spots of buildup that wouldn't wipe off. So I put a little elbow grease ...

I don't know when or how it happened. It is about half a inch in length and is not deep. It is annoying because when I read text or look at a picture in that area, there is a white line caused by the ...