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for user innovation User-Mode Driver Framework User-subjective approach Lazy user model Object-oriented user interface User-defined function Apple User Group Connection User intent Z User Group User interface modeling Unique user User environment management Atari ST User Attentive user interface Persona (user experience) User activity monitoring Windows USER Principles of user interface design Console user interface First-time user experience Linux User and Developer Multi-user MIMO Multi-user dungeon Lead user History of the graphical user interface Natural-language user interface Web User Average revenue per user Concurrent user MPEG user data Reference and User Services Quarterly End-user computing Br