tame/tamer/tests/xmli/rate/src.xml

<?xml version="1.0"?>
<package xmlns="http://www.lovullo.com/rater"
         xmlns:c="http://www.lovullo.com/calc"
         xmlns:t="http://www.lovullo.com/rater/apply-template">

  <rate yields="rateFoo" />

  <rate yields="rateBar">
    <c:sum />
    <c:product />
  </rate>

  <rate yields="rateBaz">
    <c:sum>
      <c:product />
      <c:sum />
    </c:sum>
    <c:product>
      <c:sum />
      <c:product />
      <c:sum />
    </c:product>
  </rate>

  <rate yields="ceilFloor">
    <c:ceil>
      <c:floor>
        <c:sum />
      </c:floor>
    </c:ceil>
  </rate>
</package>