anchor.diff:  
           <p class="textbody">
             <table width="100%" cellpadding="0" cellspacing="0" border="0"><tr>
  +            <td><h2><A NAME="sources">Sources</A></h2></td>
  +            <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></td>
  +          </tr></table>
  +            The NCI Term Browser home page lists alphabetically the 
  +            terminology sources that are available.  Click on a source 
  +            name to go to its home page, or click on a source's check 
  +            box to include it in a search from the NCI Term Browser 
  +            home page.  Below the sources list are three buttons:
  +            
  +            <ul>
  +              <li><b>Select All</b> includes all sources for searching, leaving their check boxes checked.</li>
  +              <li><b>Clear</b> unselects all sources, unchecking their check boxes.</li>
  +              <li><b>Search</b> starts a search in the same way as the Search button in the search box.</li>
  +            </ul>
  +            
  +            The <b>Sources</b> link at the top of the NCI Term Browser home page 
  +            gives information about all sources, including the source 
  +            descriptions appearing on each source's home page. 
  +        </p>
  +
  +        <p class="textbody">
  +          <table width="100%" cellpadding="0" cellspacing="0" border="0"><tr>
               <td><h2><A NAME="searchhelp">Search</A></h2></td>
               <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></td>
             </tr></table>
  
positive.code:         <div class="texttitle-blue">Help</div>
          <p class="textbody">
            <A HREF="#introduction">Introduction</A><br>
            <A HREF="#searchhelp">Search</A><br>
            <A HREF="#conceptdetails">Concept Details</A><br>
            <A HREF="#viewhierarchy">View Hierarchy</A><br>
  
negative.code:             <td><h2><A NAME="introduction">Introduction</A></h2></td>
              <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></td>
            </tr></table>
            <b>NCI Term Browser</b> provides a consistent, user-friendly tool to 
            browse and search all of the biomedical terminologies hosted 
            by NCI EVS, including both NCI Thesaurus (NCIt) and the NCI 
  