anchor.diff:  
     <% @gapped.keys.sort.each do |name| %>
   	<tr>
  +	  <% lights = @all_lights[name] %>
   	  <% td_map = @gapped[name] %>
       <% now_tag = 0 %>
   
  
positive.code: 	  <% end %>
  
      <td class="align-right">
        <% lights = @all_lights[name] %>
        <%= raw traffic_light_count(lights[-1].kata.id, name, lights) %>
      </td>
  
  
negative.code:             <tr>
  				    <% td.each do |light| %>
                <td>
                  <% colour = light.colour %>
                  <% was_tag = now_tag %>
                  <% now_tag = light.number %>
  