Starting with Office 2007, Microsoft switched to Office Open XML (OOXML) as the default file formats for its applications. However, the legacy .doc (Word), .xls (Excel) and .ppt (PowerPoint ...

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 ...

It is not exactly clear how this news will affect the file format spat launched by the ... saying that Microsoft's Office Open XML met the state's needs for document storage and interoperability.

Standardizing Open XML will aid interoperability between Office, the most widely used productivity ... which is the default format in OpenOffice, is a "vastly superior" format, and another ...