Jean Paoli was one of the inventors of XML. Along with Tim Bray and Michael Sperberg-McQueen, Paoli co-edited the XML 1.0 recommendation for the World Wide Web Consortium starting in 1997 and until at least 2008... (wikipedia)
I don't know anybody who is as passionate about what he is doing. I always remember seeing the fun in his eyes. We knew that we would solve very complicated problems.
It can be used by and interoperable with others.
We are acknowledging that end users who merely open and read government documents that are saved as Office XML files within software programs will not violate the license.