dia file format

[Tiago Maduro Dias <tmdias ieee org>]

Hi!

I'm considering DIA for UML graphical display/manipulation of source  
code models. Is there any resource that explains in reasonable detail  
the .dia file format?

I am aware it is compressed XML But I haven't found any resource that  
explains the XML structure for a regular UML class, for instance. Am  
I supposed to "reverse engineer" it, creating examples with DIA  
itself? It's probably not that difficult to do, just wondering if I  
was missing something.

Thank you for your time,

Tiago Maduro Dias.