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 here. You should take a quick glance at things like CSS (Cascading Style Sheets) and XHTML if you are working on web design. Document authors will want to find out more about XLink and XPointer (both of which I cover in Chapter 16, "Looking Forward"). XQL (XML Query Language) 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 http://www.w3.org/XML and see what looks interesting.
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