This chapter is all about creating connections between documents and part of documentsthe XLink and XPointer specifications. In HTML, you have hyperlinks , but XML has gone far beyond that and uses the XLink, XPointer, XPath, and XBase specifications. Unfortunately, this is an area of XML where the World Wide Web Consortium (W3C) is far ahead of the rest of the world. No concrete implementations of any of these specifications exist yet. We'll see all these specifications implemented in future software, but for now, most of the material in this chapter is waiting for actual software implementation. XLinks specify how one document links to another document, and XPointers specify locations inside a document, building on the XPath recommendation that we covered in Chapter 13, "XSL Transformations." I'll take a look at an overview now. |