Nothing? Perhaps the xml files will work as a container for data held in proprietary format. Perhaps the xml file is inside proprietary format. Perhaps people still needs to install a closed development software for accessing the proprietary data. Perhaps people still needs the MS Windows operating system. In the news, nothing like "format changes from the proprietary format to an open format" is said. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software