The key point for all of the above is the preparation and evaluation of a business process chart. This chart depicts who does what and when. There are little syntax rules for such a chart. Its purpose is to communicate aspects considered important in the given context. The chart may depict the activities of real-life objects as well as the accompanying information flow. The chart may depict any means of creation and transfer of information. It could for instance show the receiving of a telephone call as well as the automatic creation and posting of an invoice.