Format spec for .graffle?
 

I know that a .graffle file is just an Apple Property List (PLIST) file but what I'm looking for is a specification on nodes and values therein.

Sure, I can poke around and create a few test documents to see how the file changes but that of course, well, sucks since it's so tedious.

I cannot seem to find online any documentation on this... Anyone know where I might find it?

Thanks!
Brian