Colors are obtained and used to shade two-dimensional non-photo realistic images of three-dimensional models. Each of the suppliers reference the transaction when communicating transaction information such as invoices, regardless of which sub-component of the transaction the seller is involved with. Pressing the engaging projection, which engages in the through-hole, from outside the rear-side separate shaft permits release of the engaging projection from the through-hole. Using a combination of text entry fields, registration of the cameras on a floor or other map, and marking on images from the cameras, an efficient workflow for configuration may be provided.