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