Thinking Outside the Document

Toward Machine-Readable RFCs

A Mixed Inheritance XML 1.0's philosophy of 'let documents describe themselves' was pretty much required by the lack of supporting infrastructure (FPI resolvers, for instance) and the simplicity of URI-based systems. However, this simplicity combines with the options in XML 1.0 to create significant problems.
Making Repositories Immediately Useful While storing schemas and only schemas is a good start for 'schema repositories', XPDL offers a much richer set of tools, as well as hooks to documentation and other supporting tools. Connecting to a repository and getting a schema is useful; connecting to a repository and being able to use and explore documents is a lot more powerful.