The report - starting with an overview of the general structure of documentation - includes in chapter 3 an assortment of the main expectations to be had by the technical staff towards control system documentation. These are divided into: general basic requirements; testable compulsory requirements; practical recommendations and information for the manufacturer. In chapter 4 these documentation requirements are reflected to the present state of technical documentation. The main emphasis of the report however is laid on the sample documentation for one control system area presented in chapter 5. This sample documentation is based on a hierarchically structured and function related documentary method developed by the University of Stuttgart on the basis of the derived requirements and the present usual control system documentation. This function-related documentary method proves to be useful, not only for the technical staff in his rapid search for control system disturbances, but also offers - due to its clear and homogeneous meshed structure - considerable advantages for control system planning, projecting and initial start ups. As the presented documentation method is furthermore independent of the control system manufacturers, it is important that all participants try to use it uniformly.