A system and method for object-oriented marking and assignment of information to selected technological components. For optimized support, particularly during maintenance of automation systems, a system is proposed for object-oriented marking and assignment of information to selected technological components for situation-based support of the interaction between a user and a technical device, particularly for technical and industrial application. The system includes storage means (1) for storing documentation data (I1 . . . In) and recording means (2) for recording real information (R), access means (D) for accessing the documentation data, evaluation means (A) for evaluating the real information and selecting the stored documentation data as a function of the real information, means for virtual marking of a technological component, and means for displaying additional information related to the technological component that is selected by the virtual marking.