White paper from the OASIS DITA Adoption Committee. Authored by Marc Speyer. Published 1 March 2010.

Domain and topic integration

DITA 1.2 allows much more flexibility for combining vocabularies. This is achieved through relaxation of the inheritance restrictions from previous versions. This new architecture will let designers create new document types from domains and specialized topic types that extend or reuse elements from single or multiple domains and topics. The methods for determining compatibility for generalization and conref are described in the DITA
1.2 Architectural Specification.

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