Hi, I have updated my proposal to the XML library project. If you're interested in it, you can review it at http://www.google-melange.com/gsoc/proposal/review/google/gsoc2013/amosji/30... And there is also a pdf version: https://www.dropbox.com/s/3zgxkpb9bx45auo/Boost_XML_library.pdf Any comments are appreciated. Thanks a lot. Regards, Mingchao