  Current approaches to the annotation process focus on annotation schemas,
languages for annotation, or are very application driven. In this paper it is
proposed that a more flexible architecture for annotation requires a knowledge
component to allow for flexible search and navigation of the annotated
material. In particular, it is claimed that a general approach must take into
account the needs, competencies, and goals of the producers, annotators, and
consumers of the annotated material. We propose that a user-model based
approach is, therefore, necessary.
