By The way, since you are a professional and I am less than a rank amateur, can you explain why on a scanned document that was originally green and black, white areas only appear in or around certain letters, as can be seen on Obama’sCOLB and not on the other scans.
Surely with your years of experience in photoshop you can explain this anomaly, can’t you?
The article at hackerfactor link provided up thread does a much better job than I could and the author has a real PhD.