A reproducible master set is a complete set of home plans from which you can copy as many sets as you need to build your house. A copyright release is included to give you permission to legally make changes to the home plan and to make the copies that you will need for construction of one house. You will need to bring the copyright release with you when you take the plans to the copy shop. Some designers print reproducible masters on vellum paper while others print them on bond paper.