XPath Examples

Select the section of the third chapter of doc:	/doc/chapter[3]/section
Selects all "para" grandchildren of the context:	*/para
Select an a style which has svg as an ancestor:	//svg//style
From the para nodes that are children of the context node with attribute type set to main, select the third one:	para[@type="main"][3]

An example for usage in XSL:

<xsl-foreach select="./*/para[@type='main'][3]"> - - - </xsl-foreach>