I think HTML5 will replace of native software,such as Microsoft Office, just like Google Docs, and it is convince to interoperate for all online office company, it is better than ODF or OOXML, please see more, <a href="http://online-office-interoperability.blogspot.com/" target="_blank" style="color:rgb(17,85,204);font-family:arial,sans-serif;font-size:18px;background-color:rgb(255,255,255)">http://online-office-interoperability.blogspot.com/</a><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:18px;background-color:rgb(255,255,255)"> </span>