KEY BENEFIT: Provides a broad survey of designing, implementing, managing, maintaining, training, and refining the user interface of interactive systems. KEY TOPICS: Usability of Interactive systems; Guidelines, Principles, and Theories; Managing Design Processes; Evaluating Interface Designs; Direct Manipulation and Virtual Environments; Menu Selection, Form Fills, and Dialog Boxes; Command and Natural Languages; Interaction Devices; Collaboration; Quality of Service; Balancing Function and Fashion; User Documentation and Online Help; Information Search; Information Visualization; Societal and Individual Impact of User Interfaces. MARKET: An ideal reference for HCI professionals.