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Design Principles and Realization Techniques for User Friendly, Interactive, and Scalable Ontology Browsing and Inspection Tools

RacerPorter is the default GUI client of the RacerPro OWL DL / description logic system. This paper presents the design principles of RacerPorter as well as the features of the newest version of RacerPorter. RacerPorter has been revised extensively in order to enable it to work with large ontologies (e.g., OpenCyc).