Lest I mislead you into thinking that's all that there is to XML, I want to make sure that you realize there are a multitude of other XML-related technologies. I can't possibly get into them all in this chapter, or even in this tutorial. You should take a quick glance at things like Cascading Style Sheets ( CSS) and XHTML if you are working on web design. Document authors will want to find out more about XLink and XPointer. XQuery will be of interest to database programmers. In other words, there's something XML for pretty much every technology space right now. Take a look at the W3C XML activity page at and see what looks interesting.