An XML-based file format developed by Microsoft and standardized by ECMA. Starting with Microsoft Office 2007, Office Open XML is the default document format for saving applications. See Office ...

A file with the XLSX file extension is a Microsoft Excel Open XML Format Spreadsheet file. It's a ZIP-compressed, XML-based spreadsheet file created by Microsoft Excel version 2007 and later.

Similar to Microsoft's Office Open XML document format, all the elements are zipped into a single package (see Office Open XML). THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction ...

You can easily open .xml and other file types in Notepad++ by adding their extensions to the Registered extensions in Notepad++ preferences. Here’s how it’s done! Right-click the Notepad++ ...