The bible is excellent but outdated. Check the Wiki link at the top, and see the
first post here, along with its linked pastebin, for the missing parts.
The OP, as you can see, is Trion staff, and the lead designer and coder of Rift's API. He has said before he does not like xml, and Rift will never see it implemented. ZorbaTHut is going for nothing but Lua.