slide 65

XPath Has Two Main Uses

• First use: Addressing
  • addresses (finds) part of an XML document
  • can address any part of the tree from any other
  • (ask for something in an XML document (“gimme my footnote!”)
    ... and get it back)
• Second use in XSLT: for Testing/Matching
  • test whether a node in a tree matches a pattern
  • is this node a paragraph that is inside a footnote that has an attribute called “footnote-type” with the value “legal”?