From a process standpoint, the advantages of standard data versus other systems are many. It is possible, for example, to develop labor standard from drawings, product assembly documents, or operation flow documents without an industrial engineer actually visiting a job site. Thus, standard data can provide a quicker turnaround time for labor standard development than could be achieved using other methods. Indeed, at some automotive manufacturing facilities, assembly line jobs are being rewritten using standard data to balance work station assignments to 55 minutes per hour, thus improving efficiency and productivity. The utility of standard data applications is enhanced further when formulas generated from standard data are plugged into an expert system. An expert system can act also as a study database for storage and retrieval of files, as well as custom reporting.