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