And the "temporary" mode switch is a paradigm concept, i already use this for the transport section (for the "Marker" vs "Normal" mode) in the same way ;-) As mentioned i plan to go the config file way (using a file format that is compatible to NI Kore), and in the early versions of the MCU modification the only possible way to edit the configuration will be the usage of a XML-Editor. But maybe i will add later a MCU based editor, which will use the VPOTs for selecting the parameters etc.. Best, Steffen