Configuration of a MultiECU from several ECUExtracts Specifiy the ECUExtracts describing the different instances of the MultiECU Specify those PDUs of the communication description that contain semantically equal data and should be overlayed to a single PDU; Requiqures matching layout of the PDUs Specifies sematically equal system signals which should be handled by one united signal instace Specifies specifically those PDUs sent between instances of the MultiECU. Separate Instances will be created for PDUs and Signals and they will be postfixed according their Tx/Rx direction. Specifies the overlay direction. For TxRx elements a split is required before a separarte Tx or Rx overlay can be defined.