The user can only focus on information provided. However, the provider of this information is the author, who thus plays a crucial role in the data mining process. The story represents the author's point of view. The author can easily withheld information or direct the user's attention to certain points. As already discussed in Section 4.1 secondary objects of compound objects are one way to single out important information.
Secondary objects provide information the author focused on, whereas other information is withhold.
Secondary objects are a way for focusing the user's attention on certain aspects of an object. Figure 6.10 shows an example where movement and size transformation of a secondary object draws attention to it. By the way the story is told, the author can guide the user's focus to certain objects. The structure of the story guides the user's attention to special events or scenes within the story. In story telling these scenes are either turning points, climax scenes, resolution of problems, or primary objectives of actors.