What is the purpose of a reproducible set?

In some cases, modifications will need to be made to your plan after you purchase it. Reproducible sets allow qualified engineers and architects to make these changes without having to go backward and completely redraw the plans. In order for the architect or engineer to make as many copies as they need, the reproducible set comes with a copyright release. It’s a good idea to let the professional you want to make changes know about your intentions before purchasing a plan.