anchor.diff:  
   <div class="panel">
   At the end of an iteration ask each group to use the diff-view (click on
  -a traffic light) to 'replay' the steps they took.
  +a traffic light) to 'replay' the steps they took. Alternatively, ask the groups
  +to swap animal badges and replay each others steps.
   </div>
   
   <div class="panel">
  
positive.code: a traffic light) to 'replay' the steps taken by a different group.
  You can swap animal badges to choose who replays who.
  </div>
   
  </td>
  </tr>
  </table>
  
negative.code: per computer.
  
  <div class="panel">
  Print out <a href="/images/avatars/AllAvatars.pdf" target="_blank">animal badges</a>
  and give each computer the badge corresponding
  to their animal. If something goes wrong a computer can easily resume coding
  where they left off as long as they know which animal they are. 
  </div>
  
  