So the site is long since been removed, but after some archive digging i found this site.
It helped me understand what goes where when it comes to XML
https://web.archive.org/web/20100316...ebeddie.com/ui
Didnt know if i should post in the
Useful Information / Tools / Links for Developers
but yeah you can still sort and stuff. It may be a little out of date, but it does help one get started.
Credit goes all to faras for whipping the site together.