anchor.diff:        <div class="parent-expansion">
           <div class="taxon-level taxon-depth-1">
             <span class="taxon-level-title">
  -            <%= link_to parent_node.internal_name, taxon_path(parent_node.content_id) %>
  +            <%= link_to parent_node.title, taxon_path(parent_node.content_id) %>
             </span>
           </div>
           <% parent_node.each do |parent_ancestor| %>
             <% next if parent_ancestor.depth == 1 %>
             <div class="taxon-level taxon-depth-<%= parent_ancestor.depth %>">
               <span class="taxon-level-title">
  -              <%= link_to parent_ancestor.internal_name, taxon_path(parent_ancestor.content_id) %>
  +              <%= link_to parent_ancestor.title, taxon_path(parent_ancestor.content_id) %>
               </span>
             </div>
           <% end %>
  
positive.code:   <div class="taxon-focus <%= has_parents %> <%= has_children %> <%= multiple_parents %> <%= multiple_children %>">
      <div class="taxon-level taxon-depth-0">
         <span class="taxon-level-title">
           <%= page.taxonomy_tree.root_node.internal_name %>
         </span>
      </div>
    </div>
  
negative.code:       <div class="child-expansion">
          <div class="taxon-level taxon-depth-1">
            <span class="taxon-level-title">
              <%= link_to child_node.title, taxon_path(child_node.content_id) %>
            </span>
          </div>
          <% child_node.each do |child_successor| %>
            <% next if child_successor.depth == 1 %>
            <div class="taxon-level taxon-depth-<%= child_successor.depth %>">
              <span class="taxon-level-title">
                <%= link_to child_successor.title, taxon_path(child_successor.content_id) %>
              </span>
            </div>
          <% end %>
  