anchor.diff:        <h1><%= meta.title %></h1>
       </header>
       <% sections.each do |section| %>
  -      <% if section.number > 0 %>
  +      <% if section.show_chapter %>
           <div id="slide-<%= section.number %>-0" data-section="<%= section.number %>" data-sections="<%= sections.length %>" class="slide chapter">
             <div>
               <hgroup>
  
positive.code:         </div>
        <% end %>
      <% end %>
  	<div class="progress"><div></div></div>
      <script src="js/script.js"></script>
      <% meta.js.each do |js| %>
        <script src="<%= js %>"></script>
  
negative.code:             </hgroup>
            </div>
          </div>
        <% end %>
        <% if section.show_toc %>
          <div id="slide-<%= section.number %>-1" data-section="<%= section.number %>" data-sections="<%= sections.length %>" class="slide toc">
            <div>
              <hgroup>
  