Once I wrote a ten-line TeX program to add serial numbers to a large stack of Scantron forms. It worked well enough, but that's when I learned that laser printe

Once I wrote a ten-line TeX program to add serial numbers to a large stack of Scantron forms. It worked well enough, but that's when I learned that laser printers are much less precise than I thought when it comes to positioning relative to the edges of the paper.