p</A>&nbsp;was measured.&nbsp;</P>
      <P><table border="1" cellspacing="1">
            <tr>
               <td><strong>Expression</strong></td>
               <td><strong>GRETA</strong></td>
               <td><strong>GRETA<BR>
                     (non-recursive mode)</strong></td>
               <td><strong>Boost</strong></td>
               <td><strong>Boost + C++ locale</strong></td>
               <td><strong>POSIX</strong></td>
               <td><strong>PCRE</strong></td>
            </tr>
      