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OpenOffice 3 is the first version of the suite with some compatibility with the Office Open XML (OOXML) document format that is created in the latest version of Microsoft Office, a paid-for alternative to OpenOffice. These documents are identifiable by their extension having an added 'x', as with the .docx format shown above.
While OpenOffice 3 can read OOXML documents, however, it cannot create or save to them.
Another upgrade to the new version of OpenOffice is its integration of extensions, or add-ons.
It is now possible to search for updates to extensions from within OpenOffice, and the extension functionality is now presented as an integral part of the main suite. The objective in taking this approach, according to OpenOffice.org, is to keep the core suite as lightweight as possible, while making it easy for functionality to be added by those who need it.
The PDF export facility that has been integrated into the last few incremental releases of OpenOffice has now been upgraded. The tool now gives the user more control in choosing how they want the resulting PDF file to be presented — for example, opening on a specific page, or opening in thumbnail view.