span class='fl'>2</span>, <span class='fl'>2</span>, <span class='fl'>2</span>))),
  <span class='fu'>dist</span>(<span class='fl'>1</span>:<span class='fl'>16</span>)))</div><img src='mantel-4.png' alt='' width='540' height='400' /></pre>
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  <div class="col-md-3 hidden-xs hidden-sm" id="sidebar">
    <h2>Contents</h2>
    <ul class="nav nav-pills nav-stacked">
      <li><a href="#arguments">Arguments</a></li>
      
      <li><a href="#details">Details</a></li>

      <li><a href="#see-also">See al