The Presentation Part

The presentation part is concerned about the actual display of structure and content and provide the means of navigation. Authors can adopt three styles:

1. Textual Style: There is no graphical display of the structure, the presentation being limited to the display of the content of one or more nodes.
   
   
2. Graphical Style: There is a graphical display, such as an overview map, of the structure.
   
   
3. Combined Style: Both overviews and the ability to open nodes are provided.
   

The combination of the content part with the organizational part and the presentation styles would greatly facilitate comprehension and navigation.