Well, 3. covers 'simple operations'. That's why I added 'drops the watermark data'. :) I'm not so sure about discounting 2. either. A screenshot ONLY captures the displayed data (RGBA - most likely not even A). Where is the watermark data in the RGB data (unless they are doing something insignificant to the actual RGB values) since this all that a screencapture will take of the image?

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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