A development device for configuring a model of a technical system to represent signal paths, in particular on a computer with a display, wherein the model depicts at least two signal paths of the technical system and, in an initial representation, all input signals, output signals, and all processing units are depicted in the form of block elements in a circuit diagram, characterized in that the development device is configured to reduce the representation of the model to the signal path of the selected signal once any desired input signal or output signal has been selected, wherein only the relevant processing units are displayed or highlighted.
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