[Daeanor]

XML is not really a "language" to learn. It's a paradigm for transferring and displaying data in HTML. The syntax at a base level is HTML with custom tags. It's the implementation that needs learning, and that varies widely with the program implementing it. What you need to learn for custon UI's is the syntax SOE settled on to transfer and display game data to your client. So there isn't a text or tutorial for it - people have just experimented to see what does what. Some of the tags are obvious, and some less so...but I don't believe I've seen a single source that mentions what they all do.