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r assistance Intelligent user interface Fast user switching User information User interface markup language User requirements document User space and kernel space User interface management system Amstrad Computer User IBM Common User Access Natural user interface Object-oriented user interface Adaptive user interface User model Active users Closed user group User error User interface modeling Apple User Group Connection User Account Control End-user

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