Now let's look at a sample XML document. With XML, you can assign some meaning to the tags in the document. More importantly, it's easy for a machine to process the information as well. You can extract the postal code from this document by simply locating the content surrounded by the <postal-code> and </postal-code> tags, technically known as the <postal-code> element.

<address>
  <name>
    <title>Mrs.</title>
    <first-name>
      Mary
    </first-name>
    <last-name>
      McGoon
    </last-name>
  </name>
  <street>
    1401 Main Street
  </street>
  <city>Anytown</city>
  <state>NC</state>
  <postal-code>
    34829
  </postal-code>
</address>