Drawing attention to meaning.

The engineering of displays that adapt to particular tasks, users, and/or contexts depends on insight into how display content is processed and understood. There are different levels at which content carries meaning, and this paper sets out a model of how these levels of meaning are integrated within human information processing. Such a model is important in establishing a principled basis for adaptation; in particular, it identifies the critical role of a highly schematic level of representation in mediating interpretation of content. The role of this level in effecting forms of adaptation is discussed, and used to argue why recent work at the overlap between graphics and semantic web technologies may now provide a suitable foundation for delivering adaptive and minimal graphics in practice.