The GUI was implemented in a very short time. Well pre-structured widgets and instant prototyping & simulation were of particular importance, as the GUI and the middleware could be developed in parallel.
Furthermore, the GUI is available in multiple languages, which has been developed within a single GUI project. Whenever the current user language is switched, all dependencies are evaluated and displayed automatically.
The development has been taken over by BATEC in a handover workshop, so that they can make modifications if necessary by themselves.