The hypermedia authoring process has been vividly described in a special issue of the Economist as a combination of writing a book, a play, a film, and a radio or television show: A hypermedia document combines all these elements and adds some of its own. The author' s first job is to structure and explain all of the infor- mation. The author then must distill the information into brief, descriptive nodes. Each node has to contain a Iist of the ingredients,...