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      <p><a href="#setup">Setup</a></p>
      <p><a href="#function">MISSPELLINGS Function</a></p>
      <p><a href="#options">Options</a></p>
      <p><a href="#example">Example</a></p>
      <p class="line">&nbsp;</p>
      <p><a href="../Text/Omnidex%20Text.htm">Omnidex Text</a></p>
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      <h2>Misspelling Searches</h2>
      <p>Omnidex supports the ability to locate words that are misspelled in the 
        data. In these searches, Omnidex is not searching for common misspellings 
        of known words, but rather is evaluating the data itself to identify possible 
        misspellings. Given the variety of ways that words are misspelled, this 
        is much more powerful than searching for common misspellings.</p>
      <p>Misspellings may occur against words in the English language, proper 
        names or other terms not found in a dictionary. Omnidex uses a combination 
        of phonetic and typographical algorithms to compare a given word to the 
        words that have been indexed for a column. These words are then scored 
        according to how closely they match and how infrequently the word occurs. 
        The search is then expanded to include these words.</p>
      <p>All words that Omnidex identifies as a possible misspelling are not guaranteed 
        to be a misspelling, however. It is often not possible to differentiate 
        between an unusually spelled word, a nearly identically spelled word and 
        an actual misspelling. Omnidex does consider how frequently a word occurs 
        on the presumption that misspelled words occr less frequently than properly 
        spelled words. Nevertheless, a misspellings search may retrieve a handful 
        of similarly and correctly spelled words as well as misspellings.</p>
      <p>The number of possible misspellings that are found will vary greatly 
        based on the underlying data. If data is relatively free of misspellings, 
        then the only words returned are likely to be variations of spelling against 
        the original word. If the data contains a variety of misspellings, then 
        a large number of words are likely to be returned, with most being possible 
        misspellings.</p>
      <p>As an example, we searched the DISC technical support database looking 
        for misspellings of the word &quot;Omnidex&quot;. Here are the results:</p>
      <table width="100%" border="0" cellspacing="0" cellpadding="0">
        <tr> 
          <td><p>Omnnidex</p></td>
          <td><p>Omnideex</p></td>
          <td><p>Omnidex'</p></td>
          <td><p>Omnidex2</p></td>
          <td><p>Omnidexs</p></td>
        </tr>
        <tr> 
          <td><p>Omnindex</p></td>
          <td><p>Omnmidex</p></td>
          <td><p>Omnidx</p></td>
          <td><p>Omidex</p></td>
          <td><p>Onidex</p></td>
        </tr>
        <tr> 
          <td><p>Onmidex</p></td>
          <td><p>Omnudex</p></td>
          <td><p>Omnidex'D</p></td>
          <td><p>Omnidexed</p></td>
          <td><p>Omnidxe</p></td>
        </tr>
        <tr> 
          <td><p>Omndiex</p></td>
          <td><p>Omindex</p></td>
          <td><p>Omnidex'S</p></td>
          <td><p>Omnidexes</p></td>
          <td><p>Odmidex</p></td>
        </tr>
        <tr> 
          <td><p>Omnidev</p></td>
          <td><p>Omnidex-Ed</p></td>
          <td><p>Omnidex-Hp</p></td>
          <td><p>Omnidexing</p></td>
          <td><p>Omnidexkey</p></td>
        </tr>
      </table>
      <p class="line">&nbsp;</p>
      <h3><a name="setup"></a>Setup</h3>
      <p>To enable misspellings searches, you MUST execute an UPDATE TEXT command 
        in <a href="../../Utilities/ODXSQL/ODXSQL.htm">ODXSQL</a> to generate 
        spelling dictionaries for the words in a column. This step must be performed 
        after the Omnidex indexes have been build. All misspelling searches are 
        derived from these dictionaries. </p>
      <p><img src="../../images/note.gif" width="12" height="15">At present, these 
        dictionaries are not updated as new rows are added to the database. However, 
        it is uncommon that a word is added that has never been added before, 
        particularly in large databases. Therefore, it is only necessary to update 
        the dictionaries with the UPDATE TEXT command on a periodic basis.</p>
      <p>Misspelling searches are accomplished by using the MISSPELLINGS option 
        of the <a href="../../SQL%20Reference/Functions/$CONTAINS.htm">$CONTAINS</a> function or by using 
        the <a href="#function">MISSPELLINGS</a> function directly in the qualification 
        criteria.</p>
      <p class="line">&nbsp;</p>
      <h3><a name="function" id="function"></a>MISSPELLINGS Function</h3>
      <p>Causes Omnidex to check the spelling of the provided criteria.</p>
      <h5>Syntax</h5>
      <p class="ex">MISSPELLINGS(criteria[, approach[, options]])</p>
      <p class="indent"><strong>MISSPELLINGS</strong><br>
        Required.</p>
      <p class="indent"><strong>criteria</strong><br>
        Required. The qualification criteria to be expanded to include misspellings. 
        Each word will be expanded to include the possible misspellings that occur 
        in the data. </p>
      <p class="indent"><strong>approach</strong><br>
        Optional. This option is currently ignored.</p>
      <p class="indent"><strong>options</strong><br>
        Optional. See <a href="#options">Options</a> (below) for a list of valid 
        options.</p>
      <p class="line2">&nbsp;</p>
      <h4><a name="options"></a>Options</h4>
      <p>There are currently no valid options available for use with this function.</p>
      <p>&nbsp;</p>
      <p class="line">&nbsp;</p>
      <h3><a name="example"></a>Example</h3>
      <p class="ex">QUALIFY CUSTOMERS WHERE CONTENT = 'MISSPELLINGS(William)'</p>
      <p class="ex">SELECT first_name, last_name FROM CUSTOMERS WHERE $CONTAINS(FIRST_NAME,'William','MISSPELLINGS')</p>
      <p>&nbsp;</p>
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