XML Document Formats
http://www.idealliance.org/proceedings/xml05/abstracts/paper216.HTML

Bullard, C. Len
IDEAlliance
2005

Abstract:

As world events and business opportunities collide, the requirements for interoperable document formats become increasingly evident. Mandating XML for systems is a first step, but real information can't be shared effectively without a common understanding on the semantics and usage of the markup. One solution is to use agreed-on custom schemas. Another is to cite well-standardized formats such as XHTML, or deploy more specific XML formats such as Microsoft Office XML or the OpenDocument Format. None of these latter formats were written with a particular semantic usage in mind. They are of more general applicability than custom-built schemas, can be used for human-readable documents, and can be built into specific tools.