This book constitutes a coherent anthology consisting of invited chapter-length papers on intelligent hypertext techniques with special emphasis on how to apply these techniques to the World Wide Web. The book provides an introductory preface by the volume editors and chapters on information comprehension through hypertext, efficient techniques for adaptive hypermedia, annotaded 3D environments on the Web, user models for customized hypertext, conceptual analysis of hypertext, two-level models of hypertext, the TELLTALE dynamic hypertext environment, hypertext for collaborative authoring, information retrieval and information agents.