Process Flow Diagram, also known as a process flow chart, shows the document and clarifies all steps required in the manufacturing of the part in question. The process flow diagram must match both the control plan and the Process Failure Mode and Effects Analysis (PFEMA). The process flow diagram must include all of the main steps in the processing of the part and also all offline activities such as handling, measuring, inspection etc. The diagram also needs to show the flow of non-conforming materials (rejects), parts that can be salvaged, and parts that can be waste or scrap from the product.