Hello All! I'm new to the world of XML and DTD.. Can anyone please let me know if there are any standards for DTD files and XML to develop on my own. For example if I wanted to develop a messaging system, are their any standadized DTD file's that I can take a look at or can I proceed with my own ELEMENTS.. I heard that Microsoft is trying to make DTD for project management and trying to make a standard one that everyone should follow.. how true is it? If that's the case where can I find such standadized DTD/XML files. Thanks in advance.