{% if include.class %}
  {% assign class = include.class %}
{% else %}
  {% assign class = 'h2' %}
{% endif %}
<div id='{{ include.hash }}'>
  <a
     class='{{ class }} anchor'
     href='#{{ include.hash }}'
     name='{{ include.hash }}'
  >
    {{ include.title }}
  </a>
</div>