xtracts all words from a character string of texts.</p></td>
      </tr><tr>
        
        <td>
          <p><code><a href="overstemming_index.html">overstemming_index()</a></code> </p>
        </td>
        <td><p>Overstemming Index (OI)</p></td>
      </tr><tr>
        
        <td>
          <p><code><a href="performance.html">performance()</a></code> </p>
        </td>
        <td><p>Performance</p></td>
      </tr><tr>
        
        <td>
          <p><code><a href="ptstem.html">ptstem_words()</a>