Back when there was no alternative to printing in the darkroom, I remember opening up a photography magazine and reading about how certain photographers would take a file to their negative carriers in order to remove a few fractions of a millimeter of metal from each side. This would allow them to print a thin black frame around their images, and was intended to be a sign that the photographer had 'gotten things right in camera'. Which of course, is kind of silly, since a post-visualizer and darkroom master like Jerry Uelsmann could have easily worked around such a simple constraint. But the thing is, sometimes a thin black line around an image just looks good, and these days such an effect can be achieved in software with a few 'button presses' even on a heavily cropped image. And with absolutely no chance of scratched negatives.