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nnovation Acorn User Lazy user model Z User Group User activity monitoring User intent Attentive user interface User-subjective approach Unique user User–network interface Atari ST User User-Mode Driver Framework User-defined function Principles of user interface design Journal of Organizational and End User Computing User environment management Multi-user MIMO Concurrent user Windows USER Persona (user experience) Lead user Web User Console user interface Natural-language user interface Linux User and Developer History of the graphical user interface First-time user experience End-user computing Multi-u