The quality of the work is checked from time to time. If it below standard the page is tossed. Notice how bright the colors are.

This is a good example of a signature. As you can see, Preach My Gospel is printed in a 16 page signature or 8 pages front and back. When folded in half, half again, and again the pages are in sequence - 1 thru 16. If the press run is for 2000 copies each signature is printed 2000 times.
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