Multimedia is the term used to describe two or more types of media combined into a single package—usually denoting a combination of some or all of the following: video, sound, animation, text, and pictures. Multimedia gives the user the opportunity to influence the presentation of material. The selection and manipulation of various aspects of the presentation material is the interactive aspect of a multimedia presentation. Interactive features could range from a question-and-answer function to choosing from a menu of particular subjects or aspects of a presentation. One application of multimedia, for example, involves presenting the user with a "what if" scenario, in which the choices the user makes affect the outcome of the presentation. This affords the user a degree of control, not unlike directing a motion picture and having the opportunity to make changes to the plot at various junctures.

The advent and ascension of the...