rk can
    detect and help correct missing input validation.</p>

    <div class="section">
      <div class="well">
        <h5>Outline</h5>

        <ol>
          <li><a href="#regexexample">The RegexExample program</a></li>

          <li><a href="#runex1">Run the example with an invalid regular
          expression</a></li>

          <li><a href="#run1">Run the Regex Checker to see how it could
          have prevented the runtime error</a></li>

          <li><a href="#validate">Validate the user inp