Object-based user interfaces allow for a more explicit mapping between the designer's model and the system. OVID was developed to help designers understand the user's models and take advantage of the new interface style. OVID focuses on three design elements: the objects that the user is aware of, views of the object, and the interactions between the user and the objects. OVID produces a set of documented tasks that detail how the objects and the views are used to accomplish tasks A case study shows how OVID streamlines the process of creating a real-world user interface. The authors also provide a glossary as well as a bibliography to help the user understand the concepts in the book and find further information.