slide 64

What is XPath

• The tree-walking part of XSLT
• So named because it uses a path notation with slashes
  like UNIX directories and URLs

  play/act/scecne/speech
  invoice/customer_data/customer_name
  

• XPath 1.0 W3C Recommendation in 1999
• XPath 2.0 W3C Recommendation Draft 2005
  (more complex, more powerful, harder to learn)