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<h2 id="positional-element-addressing">Positional element addressing</h2> <p>The element() scheme<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> introduces positional addressing of child elements. This is similar to a simple XPath address, but subsequent steps can only be numbers representing the position of a descendant relative to its branch on the tree. </p><p>For instance, given the following fragment: </p> <foobar id="foo"> <bar/> <baz> <bom a="1"/> </baz> <bom a="2"/> </foobar> <p>results as the following examples: </p> xpointer(id("foo")) => foobar xpointer(/foobar/1) => bar xpointer(//bom) => bom (a=1), bom (a=2) element(/1/2/1) => bom (a=1) (/1 descend into first element (foobar), /2 descend into second child element (baz), /1 select first child element (bom)) <h2 id="see-also">See also</h2> <ul><li><a href="/facts/URI_fragment/lbA3Apwq">URI fragment</a></li> <li><a href="/facts/HTML/sSc3fT78">HTML</a></li> <li><a href="/facts/HyTime/gf4a5FtL">HyTime</a></li> <li><a href="/facts/Text_Encoding_Initiative/fWz7YYv9">Text Encoding Initiative Guidelines</a></li> <li><a href="/facts/XML/clNgUfWk">XML</a></li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="http://www.w3.org/TR/xptr-framework/">XPointer Framework</a></li> <li><a href="http://www.w3.org/TR/xptr-xmlns/">Namespacing</a></li> <li><a href="http://www.w3.org/TR/xptr-xpointer/">Path based addressing</a></li> <li><a href="http://lists.w3.org/Archives/Public/www-xml-linking-comments/2000OctDec/0092.html">XPointer patent terms and conditions</a></li> <li><a href="http://sourceforge.net/projects/cweb">Open source implementation (CognitiveWeb)</a></li> <li><a href="http://mvp-xml.sourceforge.net/xinclude/">GPL License .NET implementation (XInclude.NET)</a></li> <li><i><a href="https://patents.google.com/patent/US5659729A/en">Method and system for implementing hypertext scroll attributes</a></i> on Google Patents, expired 2016-02-01</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Grosso, Paul; Maler, Eve; Marsh, Jonathan; Walsh, Norman, eds. (2003-03-25). "XPointer Framework". W3C. W3C. Retrieved 2021-04-08. <a href="http://www.w3.org/TR/2003/REC-xptr-framework-20030325/" target="_blank">http://www.w3.org/TR/2003/REC-xptr-framework-20030325/</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Bikakis N.; Tsinaraki C.; Gioldasis N.; Stavrakantonakis I.; Christodoulakis S. "The XML and Semantic Web Worlds: Technologies, Interoperability and Integration. A survey of the State of the Art" (PDF). Archived from the original (PDF) on 2019-10-26. Retrieved 2021-04-08. <a href="https://web.archive.org/web/20191026052918/http://www.dblab.ntua.gr/~bikakis/XML%20and%20Semantic%20Web%20W3C%20Standards%20Timeline-History.pdf" target="_blank">https://web.archive.org/web/20191026052918/http://www.dblab.ntua.gr/~bikakis/XML%20and%20Semantic%20Web%20W3C%20Standards%20Timeline-History.pdf</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Daniel, Ron (2002-06-10). "XPointer Patent Statements". www.w3.org. Retrieved 2021-04-08. <a href="http://www.w3.org/2002/06/xptr_IPR_summary.html" target="_blank">http://www.w3.org/2002/06/xptr_IPR_summary.html</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Grosso, Paul; Maler, Eve; Marsh, Jonathan; Walsh, Norman, eds. (2003-03-23). "XPointer element() Scheme". W3C. W3C. Retrieved 2021-04-08. <a href="https://www.w3.org/TR/xptr-element/" target="_blank">https://www.w3.org/TR/xptr-element/</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> </ol>