anchor.diff:          <h2>POPULAR ERRORS</h2>
           <ul>
           <% errors.group_by {|e| e.message_id}.sort_by {|m,e| e.length}.reverse.each do |message_id, errors| %>
  -          <li>error <a href="http://validator.w3.org/docs/errors.html#ve-<%= message_id %>"><%= message_id %></a> happens <%= errors.length %> times</li>
  +          <li>
  +            error <a href="http://validator.w3.org/docs/errors.html#ve-<%= message_id %>"><%= message_id %></a>
  +            happens <%= errors.length %> times
  +          </li>
           <% end %>
           </ul>
         <% end %>
  
positive.code:             <ul class="page_warnings">
              <% page.warnings.each do |warning| %>
                <li>
                  Warning <a href="http://validator.w3.org/docs/errors.html#ve-<%= warning.message_id %>"><%= warning.message_id %></a> on line <%= warning.line %>:
                  <%= warning.text %>
                </li>
              <% end %>
  
negative.code:             <ul class="page_errors">
              <% page.errors.each do |error| %>
                <li>
                  Error <a href="http://validator.w3.org/docs/errors.html#ve-<%= error.message_id %>"><%= error.message_id %></a>
                  on line <%= error.line %>:
                  <%= error.text %>
                </li>
              <% end %>
  