Seeing the original can be very illuminating!! I had always wondered why a very important document had so many holes at vital places. So take a Pen light(small flash light) illuminate the backside of the page, interest what one may find. My light is a magnifier but used backward and I am sure anyone observing me thinks I am loosing it. It is small about the size of a lipstick tube, my son has one that is a pointer but lighted. A censured document can often be read with the light trick. Bud in Mo.