The salesperson receives a hardcopy customer order from the customer. The salesperson enters the customer order into the salesperson's mobile device using the Sales Order Program which retrieves information from the Customer Master file, enters data into the Sales Order Transaction file, and updates the information in the Customer Master file. The salesperson forwards the hardcopy of the customer order to the sales manager. The sales manager receives the hardcopy of the customer order from the salesperson. The sales manager views the salesperson's order entered into the Sales Order Program by retrieving data from the Customer Master File and the Sales Order Transaction file. The sales manager then manually compares the hardcopy of the customer order with the sales order on the computer screen and approves the hardcopy with a signature. The sales manager then files the signed hardcopy in the Approved Customer Orders file cabinet by customer number. The sales manager prints a picking ticket for each sales order by using the Sales Order Program and retrieving information from the Sales Order Transaction file. The sales manager sends the picking ticket to the warehouse clerk. The warehouse clerk receives the picking ticket from the sales manager. The warehouse clerk manually gathers the items listed on the picking ticket (NOTE: use the input/output parallelogram symbol to represent the items). The warehouse clerk enters the items picked into a mobile device using the Order Processing Program which retrieves information from the Customer Master file and the Sales Order Transaction file and enters data into the Orders Processed Transaction file. The warehouse clerk brings the picking ticket and items to the shipping clerk. The shipping clerk receives the picking ticket and items from the warehouse clerk. The shipping clerk enters the items received into a mobile device using the Shipping Program which retrieves information from the Customer Master file and the Sales Order Transaction file and enters data into the Shipments Transaction file. The shipping clerk files the picking ticket in the Completed Picking Tickets file by date. The shipping clerk prints a packing slip using the Shipping Program which retrieves data from the Customer Master file, Sales Order Transaction file, and Shipments Transaction file. The shipping clerk sends the packing slip and items to the customer