MATERIAL REQUIREMENTS PLANNING (MRP) SYSTEMS REQUIRE MANY TRANSACTIONS TO MAINTAIN MANUFACTURING ENGINEERING DATA. THE GENERATION AND MAINTENANCE OF MACHINE AND TOOL DATA REQUIRES CUMBERSOME KEYBOARD EFFORTS. THIS PAPER ADDRESSES HOW, WITH WORKSTATION-BASED CAPP, MANUFACTURING ENGINEERING PLANNERS CAN USE GRAPHICAL USER INTERFACE TOOLS TO RAPIDLY PRODUCE ROUTING AND STANDARDS INFORMATION FOR MAINTAINING MATERIAL REQUIREMENTS PLANNING (MRP) SYSTEMS WHILE CREATING DETAILED MANUFACTURING INSTRUCTIONS AND DOCUMENTATION MUCH FASTER THAN BY TRADITIONAL METHODS. THE INTERFACES AND DATA FLOWS REQUIRED ARE DESCRIBED. WITH WORKSTATION-BASED CAPP, PROCESS PLANNING ENGINEERS CAN INCORPORATE GRAPHICAL SKETCHES, IMPORT CAD DRAWINGS, AND CONSULT ROUTING DISPLAY MAPS AS THEY PREPARE TOOL AND ASSEMBLY INSTRUCTIONS FOR PLANT FLOOR WORKERS.