I hate to answer my own question again, but I've found a work-around. I found that setting the window's region again clears any of the stray white pixels without causing any ugly redrawing or flashing anywhere else. This works even if the region I am setting is the same as the existing region, so something as simple as this works.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.