anchor.diff:    <tr>
       <td align="right">
         <div id="seconds_per_column_text">
  -        seconds per column
  +        seconds per column&nbsp;
         </div>
       </td>
       <td align="left">
  
positive.code:   <tr>
      <td align="right">
        <div id="maximum_columns_text">
          maximum columns
        </div>
      </td>
      <td align="left">
  
negative.code:   <tr>
      <td align="right">
        <div id="auto_refresh_text">
          auto refresh&nbsp;
        </div>
      </td>
      <td align="left">
  