Multilingual User Interface (MUI) is the name of a Microsoft technology for Microsoft Windows, Microsoft Office and other applications that allows for the installation of multiple interface languages on a single system. On a system with MUI, each user would be able to select their own preferred display language. MUI technology was introduced with Windows 2000 and has been used in every release since (up to Windows 8). The MUI technology is covered by an international patent titled "Multilingual User Interface for an Operating System" (US Patent number: 6252589). The inventors are Bjorn C. Rettig, Edward S. Miller, Gregory Wilson, and Shan Xu.