xpointer(id("ebnf"))
xpointer(descendant::language[position()=2])
ebnf
xpointer(/child::spec/child::body/child::*/child::language[position()=2])
/1/14/2
xpointer(id("ebnf"))xpointer(id("EBNF"))
The document is not specified in the XPointer; rather, the
XLink specifies the document. The XLinks you saw in the previous
chapter did not contain XPointers, but it isn't hard to add
XPointers to them. Most of the time you simply append the
XPointer to the URI separated by a #, just as you
do with named anchors in HTML. For example, the above list of
XPointers could be suffixed to URLs and come out looking like
the following:
http://www.w3.org/TR/1998/REC-xml-19980210.xml#xpointer(id("ebnf"))
http://www.w3.org/TR/1998/REC-xml-19980210.xml#xpointer(descendant::language[position()=2])
http://www.w3.org/TR/1998/REC-xml-19980210.xml#ebnf
http://www.w3.org/TR/1998/REC-xml-19980210.xml#xpointer(/child::spec/child::body/child::*/child::language[position()=2])
http://www.w3.org/TR/1998/REC-xml-19980210.xml#/1/14/2
http://www.w3.org/TR/1998/REC-xml-19980210.xml#xpointer(id("ebnf"))xpointer(id("EBNF"))
Normally these
are used as values of the xlink:href attribute of a
linking element. For example:
<SPECIFICATION xmlns:xlink="http://www.w3.org/1999/xlink" xlink:type="simple"
xlink:href="http://www.w3.org/TR/1998/REC-xml-19980210.xml#xpointer(id('ebnf'))">
xlink:actuate="onRequest" xlink:show="replace"
Extensible Markup Language (XML) 1.0
</SPECIFICATION>