See the full post for details on Altova XMLSpy's Open XML capabilities
While Open XML may not yet be an ISO standard, it is already standardized by ECMA and - even more important - all documents created by Office 2007 are already stored in Open XML by default, so there is an abundance of documents whose content you can now reuse much more easily and productively than ever before. So instead of waiting for the ISO vote or paying too much attention to all the political battles being fought around it, I want to show you how you can already take advantage of Open XML (sometimes also called OOXML or Office Open XML) today.
This is the first article in a series of blog postings that I plan to write about practical Open XML tips & tricks, so I encourage you to subscribe to my XML Aficionado blog (via RSS or via e-mail), if you haven't already done so. This will ensure that you get future articles from this series automatically as soon as I post them.