The xlink:href attribute is also called the locator attribute. This is the attribute that supplies the data that allows an XLink application to find a remote resource.
Although XLinks can be quite general, they commonly use URIs to locate resources. You usually use a URI in xlink:href. Now that we're examining the way linking works in XML, you might want to look up the formal definition of URIs, which you can find in its entirety at www.ics.uci.edu/pub/ietf/uri/rfc2396.txt.
We've seen that you can set the xlink:href attribute to specify a document and an XPointer:
<MOVIE_REVIEW xmlns:xlink = "http://www.w3.org/1999/xlink" xlink:type = "simple" xlink:show = "new" xlink:href = "http://www.starpowdermovies.com/reviews.xml#xpointer(/child::*[position ...