$if not (null params)
  <h3>Graphs by parameters

  $forall param <- params
     <h4>
      <tt>#{param}
     $forall test <- selectedTests
       <a name="link-chart-#{param}-#{toPathPiece $ entityKey test}">
       <div style="height:800px" id="chart-#{param}-#{toPathPiece $ entityKey test}">
       [<a href="#link-chart-#{param}-#{toPathPiece $ entityKey test}">direct link</a>]

  <script src="/static/js/d3.min.js" charset="utf-8"></script>
  <script src="/static/js/c3.min.js"></script>