   <a href="{{post.patent2}}">patent #2</a> /
              {% endif %}
              {% if post.patent3 %}
              <a href="{{post.patent3}}">patent #3</a> /
              {% endif %}
              {% if post.video %}
              <a href="{{post.video}}">video</a> /
              {% endif %}
              {% if post.video2 %}
              <a href="{{post.video2}}">video #2</a> /
              {% endif %}
              {% if post.code %}
              <a href="{{post.code}}">code</a> /
            