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