If someone would've asked me whether this is valid XML, I would've thought twice before saying yes or no... thanks to the quick and awesome tutorials on W3Schools.com, now I know this, in fact, is valid XML :)

<letter>
  Dear Mr.<name>John Smith</name>.
  Your order <orderid>1032</orderid>
  will be shipped on <shipdate>2001-07-13</shipdate>.
</letter>