As James eloquently described in his post titled "Sign-up for freedom of choice" we're looking for your support for OpenXML to be adopted as an ISO standard. It's an open XML based standard used to describe Office documents.
As is often the case there's an alternative standard, Open Document Format (ODF) in this case - it too is XML based. ODF has already been ratified by ISO. We're keen for users to be able to choose either format.