18.5 A Sample Guided Tour

At runtime users set their profile by selecting the keywords which interest them most and placing them in the interest list. After every modification of the user profile, CYBERMAP is newly computed. Once the map has been calculated and drawn, users are free to jump to any selected node in the hyperdocument and to browse at will in the document. This means that readers can use the original browsing mechanisms of the browsing environment while staying in the hyperdocument. In particular, there is no constraint on the following of links that have been produced by the original author of the hyperdocument. If the reader jumps back to the CYBERMAP, the actual location in the document is shown in the map.

The following screen shots show a brief example of the use of CYBERMAP where the readers are about to browse in a HyperCard stack about dinosaurs:

Figure I.101 In the first picture, the readers selected the keywords that are of interest to them from the interest list and are about the generate a new CYBERMAP.

Figure I.102 In the second picture, readers started in the CYBERMAP by clicking on the hyperdrawer containing "Tyrannosauridae" and selecting the Spinosaurus. The partly black boxes underneath of the hyperdrawers denote the percentage of retrieved nodes out of all nodes of each hyperdrawer.

Figure I.103 In the third picture the system jumped to the node titled "Spinosaurus". To ease further browsing, a navigator window popped up showing all nodes of the hyperdrawer.

Figure I.104 In the fourth picture, readers browsed sequentially to the Coelosaurus node using the navigator window. The navigator window has been collapsed by the readers.

Figure I.105 Finally the readers jumped back to the CYBERMAP by clicking on the button " " (see previous screen shot). Their momentary location in the dinosaur stack is marked in the CYBERMAP by highlighting the rectangle representing the "Tyrannosauridae" hyperdrawer.

For this browsing example the original version of CYBERMAP was used. As discussed in the previous section, there have been many changes to the ways the hyperdrawers are presented, but the original browsing mechanism is still the same.