HyTime

Legacy

• HTML is an application of SGML for hypertext document presentations, that assigns specific semantics and processing expectations to a fixed set of element types.
• XML defines a simplified subset of SGML that focuses on providing an open vocabulary of element types for data modeling and establishes precise expectations for how the marked-up data is read and subsequently fed to another software application for further processing, but does not assign semantics to the element types or establish expectations for how the data is processed.
• XLink was intended as a simplified version of HyTime for use in the XML world, but has not seen much adoption.
• Work on applying HyTime to back-of-book indexes eventually led to the development of Topic Maps, which eventually became far more successful in its own right than HyTime ever was.

  Standard