DTD

Hi,

I am writing an web based project system for my final year project at
university and was wondering of their was a DTD for the XML file format 
that you use.

I would like to be able to offer a project import/export facilty if
possible.

I couldn't find one on the website and wasn't sure where to look for
one.

Sorry if this is the wrong mailing list. If it is could you point me in
the right direction.

Thanks

Jake