Andy Updegrove writes "Today, Microsoft announced its own interoperability project to bridge the gap between China's domestically developed Uniform Office Format (UOF) and Microsoft's OOXML. In the continuing tit for tat battle between ODF and OOXML, this announcement tracks the intent of an already-existing 'harmonization' committee, hosted by OASIS, that is exploring interoperability options between ODF and UOF. Like the OOXML-ODF translator project announced by Microsoft last year, the new effort will be an open source project hosted by SourceForge. The announcement is, in one sense, no surprise. Microsoft has been waging a nation-by-nation battle for the hearts and minds of ISO/IEC JTC1 National Bodies, in an effort to win adoption of OOXML (now Ecma 376) as a global standard with equal status to ODF (now ISO 26300). In order to do so, it needs to offset the argument that one document format standard is not only enough, but preferable. With UOF representing a third entrant in the format race, easy translation of documents would obviously be key to lessen the burden on customers of products based upon one format or the other."