Migrating HTML to DITA, Part 2: Extend the Migration for More Robust Results
http://www.ibm.com/developerworks/xml/library/x-dita8b/?S_TACT=105AGY82&S_CMP=GENSITE

Anderson, Robert
IBM
2005

Abstract:

The Darwin Information Typing Architecture (DITA) holds many advantages over information authored directly in HTML, including better reuse, easily changed presentation styles, and easy single sourcing. In Part 2 of this two-part series on how to quickly migrate HTML topics to DITA, the author explains the details of migration, and shows you how to override parts of this process for ideal results.