http://blogs.technet.com/tarpara/archive/2008/02/20/office-binary-formats-released-to-the-public-under-open-specification-promise.aspxFinally what the open-source community has been asking from Microsoft has come to fruition, we've released the Office Binary Format in it's entirety and put it under our IRREVOCABLE, GPL-compatible, legally binding Open Specification Promise .  Thisen-USCommunityServer 2.1 SP1 (Build: 61025.2)