Well, as promised we put the Microsoft Office Binary (doc, xls, ppt) File Formats under the Microsoft Open Specification Promise and made them available for everybody. Ever wanted to look behind the scenes? Find the Microsoft Office Binary (doc, xls, ppt) File Formats at http://www.microsoft.com/interop/docs/OfficeBinaryFormats.mspx.
PingBack from http://www.biosensorab.org/2008/02/18/microsoft-office-binary-doc-xls-ppt-file-formats-available-for-everybody/
so... M$ didn't open 'em fully... there is a lot of space in the description. And... Do we need it now? 'tis too late:)