Date: Jul. 15, 1998
Link: http://www.ornl.gov/sgml/wg8/docs/n1920/html/clause-A.3.html
Source Author or Organization: ISO

Excerpted from web site: "This annex states the requirements for the formal definition of the architectural forms by which an enabling document architecture governs the SGML representation of its documents. "

"NOTE 392 The formal definitions of the HyTime architectural forms satisfy these requirements and (without loss of generality) are used to illustrate them."