http://blogs.msdn.com/b/openspecification/archive/2011/07/13/bffvalidator-tool-goes-public.aspxYesterday, the Office Interoperability team announced the public release of the Beta version of the Microsoft Office Binary File Format Validator, also known as BFFValidator. You can read the official announcement from the Office Interoperability teamen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)