A typical screen is shown in Figure 2. Links are indicated by the grey underline below words. Where the links are to specific resources, a P or M precedes the link to indicate that it is a picture or movie. Glossary links do not have a prefix. It was a design requirement that redundancy would be built into the system to cater for this.
Navigation is the most important function.
Therefore the redundancy used to support this is the highest. There are at least five different methods of navigation in addition to those which are provided as part of the software system. Redundancy was also built into the design in the way that users could access resources such as the pictures and movies. As well as clickable links from within the text which displayed these resources, buttons were provided to allow users to scroll through these without having to refer to the text. In evaluations of the system, the provision of such redundancy was rated as a very positive feature by students and staff.