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This paper introduces a new generation of the common Topic Maps API (TMAPI). It has evolved from version 1.0 and is now based on the meanwhile finalized Topic Maps Data Model (TMDM). A comprehensive developer experience allowed the design of a user-friendly API for Topic Maps application development independently of a specific Topic Maps processor.
Among TMDM compliance, the design objectives also covered the consideration of the TMDM constraints as well as developer convenience requirements, basic filtering and simplification. For more complex filter operations a filter language has been drafted.