xlsx documents are also integrated with compatibility support for VB scripting through macros. The data stored in an XLSX file usually consists of text, numerical data and stats that are entered by a user, and certain functions for automating mathematical calculations or text formatting options may also be implemented into an XLSX spreadsheet. Integrated with XML specifications, these XLSX files can be implemented into certain Web publishing applications and database programs. These XLSX files can also be opened with older versions of Microsoft Excel, though compatibility support must first be downloaded from the Microsoft website and installed in the system.
XLSX files are the default spreadsheet output documents of newer versions of Microsoft Excel, starting with Microsoft Office 2007.
