anchor.diff:    <table>
       <tr>
         <td class="panel">
  -          cyber-dojo is designed to encourage <em>team practice</em> 
  -          and works well with two (or more) people at each 
  +          cyber-dojo is designed to encourage <em>team practice</em>
  +          and works well with two (or more) people at each
             computer, periodically rotating the current keyboard
             drivers to <em>different</em> computers as navigators.
         </td>
       </tr>
  -    
  +
       <tr>
         <td class="panel">
             Do a diff-review after each practice via the dashboard.<br/>
             Look for evidence of...<br/>
  -          
  +
             <% width=10 %>
             <% height=width*3 %>
             &nbsp;&nbsp;
               <%= traffic_light_image('red',width,height) %>
               <%= traffic_light_image('green',width,height) %>
               starting with a failing test<br/>
  -          
  +
             &nbsp;&nbsp;
  -            <%= traffic_light_image('green',width,height) %>          
  -            <%= traffic_light_image('green',width,height) %>          
  -            <%= traffic_light_image('green',width,height) %>          
  -            refactoring<br/>        
  -          
  +            <%= traffic_light_image('green',width,height) %>
  +            <%= traffic_light_image('green',width,height) %>
  +            <%= traffic_light_image('green',width,height) %>
  +            refactoring<br/>
  +
             &nbsp;&nbsp;
  -            <%= traffic_light_image('amber',width,height) %>                    
  -            <%= traffic_light_image('amber',width,height) %>                    
  -            <%= traffic_light_image('amber',width,height) %>                    
  -            <%= traffic_light_image('amber',width,height) %>                    
  -            overly ambitious steps<br/>        
  +            <%= traffic_light_image('amber',width,height) %>
  +            <%= traffic_light_image('amber',width,height) %>
  +            <%= traffic_light_image('amber',width,height) %>
  +            <%= traffic_light_image('amber',width,height) %>
  +            overly ambitious steps<br/>
         </td>
       </tr>
  -  
  +
       <tr>
         <td class="panel">
             Practice refactoring. How about...<br/>
  -          &nbsp;&nbsp;&bull; the <a href="http://jonjagger.blogspot.co.uk/2012/05/yahtzee-cyber-dojo-refactoring-in-java.html">Yahtzee kata</a> in C#, C++, Java, Python <br/>
  -          &nbsp;&nbsp;&bull; the <a href="http://coding-is-like-cooking.info/2013/01/setting-up-a-new-code-kata-in-cyber-dojo/">Tennis kata</a> in C#, C++, Java, Python, Ruby 
  +          &nbsp;&nbsp;&bull; the <a href="http://jonjagger.blogspot.co.uk/2012/05/yahtzee-cyber-dojo-refactoring-in-java.html" target="_blank">Yahtzee kata</a> in C#, C++, Java, Python <br/>
  +          &nbsp;&nbsp;&bull; the <a href="http://coding-is-like-cooking.info/2013/01/setting-up-a-new-code-kata-in-cyber-dojo/" target="_blank">Tennis kata</a> in C#, C++, Java, Python, Ruby
         </td>
       </tr>
  -  
  +
       <tr>
         <td class="panel">
             When everyone is at green set a challenge to either<br/>
  
positive.code:           &nbsp;&nbsp;&bull; find a bug, and write a failing test for it
        </td>
      </tr>
    
      <tr>
        <td class="panel">
            Here's some more variations...<br/>
  
negative.code:           &nbsp;&nbsp;&bull; Create a practice with a specific fault - which pair can fix it first<br/>
        </td>
      </tr>
  
      <tr>
        <td class="panel">
            If your team regularly pair-programs and you're looking
  