DITA XML.org is the official community gathering place and information resource for the Darwin Information Typing Architecture (DITA) OASIS Standard. This site is hosted by OASIS
The DITA OASIS Standard defines an XML architecture for designing, writing, managing, and publishing technical documentation in print and on the Web. DITA (commonly pronunced dit'-uh) builds content reuse into the authoring process for document creation and management.
"DITA builds content reuse into the authoring process, defining an XML architecture for designing, writing, managing, and publishing many kinds of information in print and on the Web."