anchor.diff:  
   <% else %>
   
  -  <%# no need to output data-val here since same as human readable %>
  +  <%# show search excerpt (highlights search terms) if exists for this questioning, else just show plain answer value %>
  +  <%= content_tag(:div, excerpt_if_exists(@response, answer)) %>
   
   <% end %>
  
positive.code: <%# render the answer value based on question type. we include machine readable value in
      data-val so that conditions can still be eval'd in JS %>
  <% case type = answer.qtype.name
  
     when "select_one" %>
  
negative.code:   <% val = answer.send("#{type}_value") %>
  
    <%# output time value in human readable and machine readable formats %>
    <%= content_tag(:div, val.nil? ? "" : l(val, format: format)) %>
  
  <% when "integer", "decimal", "counter" %>
  
    <%= content_tag(:div, answer.value) %>
  
  <% when "image", "annotated_image", "signature", "sketch", "audio", "video" %>
  
  