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3/14

3.3.9.2 Hypertext

Parts of a specific course can often overlap, and thus cross-references are required. If you author the course material as hypertext, you can easily implement cross-references as hyperlinks. Since the World Wide WWW is an enormous database, links as references to additional reading material can simply be added.

Nevertheless, the course material should have a hierarchical structure that students do not get confused or ``lost'', and they could even miss some chapters. How to show the students, whether they have already read a certain page, is a big problem because, currently, visited links are only stored and displayed in the WWW-client, and you cannot take it for granted the students always use the same WWW-client. Especially in computer labs, students use different browsers when using different computers. Paul De Bra, who teaches a WWW-based Hypertext and Hypermedia course, developed additional software on the server side to store this information [DB96], both to help students and to log and analyse students' reading habits.

In addition to the hypertext version, there should also be printouts because ``softreading'' is still very tiring, and things like annotations or highlighting words, which we are used to as far as paper is concerned, is still not possible on the WWW.