Notes about the XQL 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 XQL file type is primarily associated with 'XML Query Language (XQL)' by World Wide Web Consortium. The XML Query Language (XQL) is a notation for addressing and filtering the elements and text of XML documents. XQL is a natural extension to the XSL pattern syntax.