[1] X Sharp/Nodes (2009-01-22 20:51:58 +09:00 版) <http://wiki.codeglide.com/X_Sharp/Nodes#Selecting_nodes>

XPath expressions can be used within the <?xpath ?> instruction to select and pass nodes to the current output collection, for example:

<!-- Add to the output collection only books with prices under $50 -->
<?xpath $library/book[@price < 50] ?>

[2] XPointer Registry ( (2011-03-03 12:00:58 +09:00 版)) <http://www.w3.org/2005/04/xpointer-schemes/xpath>

[3] public-xpointer-registry@w3.org from January to March 2011 by thread ( (2011-01-21 02:15:20 +09:00 版)) <http://lists.w3.org/Archives/Public/public-xpointer-registry/2011JanMar/thread.html>