10-19. Figure 10-14 is a system flowchart for P. Miesing and Company's purchase order event. Prepare a narrative to accompany the flowchart describing this purchase order event. Include in your narrative the source documents involved, the computerized data processing that takes place, data inputs used to prepare purchase orders, and the outputs prepared from the processing function. wu Key products Vendor Key Prepare Durchase pending ubone Purchase way Purchase Odense Vendor FIGURE 10- Symfowchart lustrating the preparation of purchase orders for us