learning xpath.

When to use // and when not to ?

//ELEMENT will get you the node-set all the node matching the element ELEMENT, its very cost and heavy on the parser. Better take caution , when you use this in you template.

Here are few links, where it might throws some light , what is that

http://www.w3.org/TR/xpath
http://www.oreilly.com/catalog/xmlnut/chapter/ch09.html
http://www.topxml.com/xsl/tutorials/intro/xsl4.asp
http://www.w3schools.com/Xpath/xpath_syntax.asp

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