<P> Windows Vista further advanced MUI technology with support for single, language - neutral, language - independent binary files supporting multiple language skins, with the language - specific resources contained in separate binaries . The MUI architecture separates the language resources for the user interface from the binary code of the operating system . This separation makes it possible to change languages completely without changing the core binaries of Windows Vista, or to have multiple languages installed on the same computer while using the same core binaries . Languages are applied as language packs containing the resources required to localize part of or the entire user interface in Windows Vista . </P> <P> MUI packs are available to Windows Vista Enterprise users and as an Ultimate Extra to Windows Vista Ultimate users . MUI packs are also available to Windows 7 Enterprise and Ultimate edition users . </P> <P> Beginning with Windows Vista, the set of associated MUI APIs are also made available to developers for application development . </P> <P> Beginning with Windows 7, Microsoft started referring to MUIs as "Language Packs," although this isn't to be confused with Language Interface Packs (LIP) </P>

What is a mui file in windows 7