<?xml version="1.0"?>

<html
  xmlns:pwp="http://www.cs.otago.ac.nz/staffpriv/ok/pwp.pl">
  <head><title>Example 2</title></head>
  <body pwp:ask="Hello = 'Hello world', A = 20, B = 22">
    <h1 pwp:use="Hello"/>
    <p>The answer is <span pwp:tag='-' pwp:use="C" pwp:ask="C is A+B"/>.</p>
  </body>
</html>
