Introduction to Hypertext: Hypertext (hyper: "over" and text: "the body of words") is a term that was first proposed by software developer Theodor Nelson in the early 1960's to indicate an information management paradigm based on nonsequential access to a body of knowledge (Nelson, 1967). Ted Nelson is continuing his development of hypertext systems with Xanadu, an expandable publishing environment for interconnecting many people and various media resources. Nelson's interactive super network is ultimately intended to "bring all published text, sound, and film into every home in the world (Miller, 1989). A hypertext system allows users to explore an information base in terms of their particular interests, needs, and degree of prior knowledge or comprehension. The ability to access information nonsequentially means that the user can construct a unique path through the body of information according to a perception of the relevancy of information patterns, associations, and perspectives in satisfying the objectives of the search. Hypertext products mimic the brain's ability to use reference links to quickly and intuitively store and retrieve information. At its most basic level, a hypertext system is a database management system that connects screens of information (idea nodes) by using referential links. A sophisticated hypertext system establishes an integrated information environment for professional collaboration, communication, and the acquisition of knowledge (Fiderio, 1988). Data Processing Technologies Problems in Information Science Information vs. Negative Information Grandfather of Hypertext Four Types of Hypertext Three Principles of Good Hypertext Application: IPIS-Hypertext Applications: Project Jefferson and IBIS Effectiveness of Interactive Video Neural Networks