In an interoperability meeting hosted by Microsoft in London Monday, Fraunhofer FOKUS, a German research institute, said it would develop a document test library and a validation tool that will help developers verify if software they're building is conformant to the standard, said Doug Mahugh, the lead standards professional for the Microsoft Office Interoperability team.

"If they want to generate a document [in the software] they will have some way of verifying that the document would support ISO29500," he said. ISO29500 is the current version of OOXML that has been approved by the ISO (International Organization for Standardization) as an international document format.

Fraunhofer FOKUS discussed how they plan to develop the tool and how vendors and interested parties can participate in the project at the meeting, but did not give a time frame for when the software would be available, according to Microsoft.

An update this year adds support for ECMA-376, an earlier version of OOXML standard, to Office 2007, but Microsoft won't support the ISO29500 specification until it releases its forthcoming Office 2010 technology. Office 2007 is the software that set off the controversy over document formats when Microsoft developed OOXML as its own XML-based file format for the suite.

In addition to OOXML, Open Document Format (ODF) is another ISO-approved global technology standard for documents; it was approved before OOXML. In fact, Microsoft's decision to create OOXML and then submit it as a standard rather than support ODF was extremely controversial. The ISO eventually made OOXML an international standard in April 2008 after a long, contentious approval process.