Notes about the MXML file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The MXML file type is primarily associated with 'Flex' by Adobe Systems Incorporated. MXML is an XML language that you use to lay out user-interface components for Adobe Flex applications. You also use MXML to declaratively define nonvisual aspects of an application, such as access to server-side data sources and data bindings between user-interface components and data sources.