Layout/testdrive.skin
Sourcecode in Layout/testdrive.skin:
1:   <form method="get" action="<% layout.url action="stopTestdrive" %>">
2:   <div>Currently testing the layout '<% layout.title linkto="main" %>'<br /><% input type="submit" name="stop" value="Stop testing the layout" %></div></form>
3: