{# single reference marker for histogram viz; expects a reference dict as returned by summary_value #}
<div class="visualization-marker-container">
{% url 'books:reference' derridawork_slug=ref.derridawork__slug page=ref.derridawork_page pageloc=ref.derridawork_pageloc  as ref_url%}
  <div role="button" class="visualization-chapter-marker"
     href="{% url 'books:detail' slug=ref.instance__slug %}"
     id="tt{{ ref.id }}"
     data-url="{{ ref_url }}"
     tabindex="0">
    {{ forloop.counter }}
  </div>
</div>

{# single reference marker for histogram viz; expects a reference dict as returned by summary_value #}
<div class="visualization-marker-container">
{% url 'books:reference' derridawork_slug=ref.derridawork__slug page=ref.derridawork_page pageloc=ref.derridawork_pageloc  as ref_url%}
  <div role="button" class="visualization-chapter-marker"
     href="{% url 'books:detail' slug=ref.instance__slug %}"
     id="tt{{ ref.id }}"
     data-url="{{ ref_url }}"
     tabindex="0">
    Reference on page {{ ref.derridawork_page }}
  </div>
</div>

Add useful button text for reference visualiztion
Add useful button text for reference visualiztion
