“A number of basic interoperability tests between Microsoft Office 2007 and various ODF-supporting software suites revealed that the level of interoperability is far short of what governments around the world are demanding,” said Marcich. “For example, even the most basic spreadsheet functions, such as adding the numbers contained in two cells, were simply stripped in an ODF file when opened and re-saved in Microsoft Office 2007. A document created in one ODF-supporting application, when re-saved in Microsoft Office 2007, rendered differently – missing bullets, page numbers, charts and other objects, changed fonts – making collaboration on an ODF file with Office 2007 very difficult. Indeed, some of the so-called ‘plug-ins’ were revealed to provide better support for ODF than the recently released Microsoft Office 2007 SP2. This is no way to achieve the interoperability around ODF that the marketplace is demanding.