These documents may be used to test programs that open ODF and OOXML files. For example, you may want to test (for performance (speed) or quality of conversion.
This is an OpenDocument reference document produced in OpenOffice.org. This document uses a variety of word processor features.
This is a reference document produced in Microsoft Office 2007. This document tests a variety of features for comparing programs which convert or otherwise interpret Office OpenXML (aka docx, OOXML, MOOX, Office 12, etc.).
For reviews of how well various programs open this document, see OpenOffice.org Ninja.