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