    You can click on a phase name in the upper part or press the <i>left</i> and <i>right</i> (or <i>p</i> and <i>n</i>) keys on your keyboard to display the rust code of another phase. Press <i>r</i> to refresh.
      </p>
      <p>
        On the lower part, you can click on any chunk of code to show a dialog displaying its AST representation. Then, you can browse the AST and open/collapse AST nodes by clicking on them.
      </p>

      
      <button onclick='document.querySelector("#help > dialog").clo