The document discusses production planning and control (PPC). PPC involves planning, which looks ahead to anticipate issues and decide how best to carry out production, and control, which ensures the production plan is maintained. It explains key aspects of PPC including the production system, planning items like materials and routing, and controlling items like inspections. PPC uses techniques like material requirements planning (MRP) to help meet production goals like renewing inventory and fulfilling customer orders. The document provides details on various facets of planning, controlling, and executing production.