Agent-based models (ABM) are often documented with the ODD-protocol, which gives a suitable framework. This framework lacks a formal documentation of the model itself, which is normally written in a simulation environment like e.g. NetLogo, GAMA, REPAST or another modelling language. These days, the de facto standard for documenting business processes is the Business Process Modelling Notation (BPMN), which could be interpreted as a successor of flowcharts and EPKs (“Ereignisgesteuerte Prozesskette”). We (Stefan Mohr, Gudrun Wallentin & Askell Perske) suggest the usage of BPMN for documenting the programmed models (the program code) and want to show, that flowcharts could easily be changed to BPMN, which might provide some additional advantages.