Specializing domains in DITA

In current approaches, DTDs are static. As a result, DTD designers try to cover every contingency and, when this effort fails, users have to force their information to fit existing types. The Darwin Information Typing Architecture (DITA) changes this situation by giving information architects and developers the power to extend a base DTD to cover their domains. This article shows you how to leverage the extensible DITA DTD to describe new domains of information.