anchor.diff:          </p>
           <p class="textbody">
             <table width="725px" cellpadding="0" cellspacing="0" border="0"><tr>
  -            <td><h2><A NAME="hierarchy">View NCIt Hierarchy</A></h2></td>
  -            <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></a></td>
  -          </tr></table>
  +            <td><h2><A NAME="hierarchy">View Hierarchy</A></h2></td>
  +            <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></a></td>
  +          </tr></table>
  +          <!-- ************* View Hierarchy ************** -->
  +          Many sources have hierarchies of concepts, arranged from the most general at the top to the most
  +          specific at the bottom leaf nodes. Most common are "is-a" hierarchies, where child concepts are
  +          subtypes of their parent(s) (e.g., Mold is-a Fungus), but other relationships, such as "part-of",
  +          are also used by some source terminologies. The browser provides several ways of viewing hierarchies
  +          when they are available.
  +          <br><br>
             Click on the <b>View NCIt Hierarchy</b> link at the top of the page to bring up a separate window showing the
  -          NCI Thesaurus hierarchy as presented through NCIm concepts.  Some details:
  +          NCI Thesaurus hierarchy as presented through NCIm concepts. Some details:
             <ul>
               <li>At first, only the top level nodes of the hierarchy are shown.
               <li>At each level, concepts are listed alphabetically by concept name.
               <li>Browse through the levels by clicking on the + next to each concept.
               <li>Click on the concept name itself to see the concepts details in the main browser window.
             </ul>
  +          <b>Source</b> drop-down box: If you select a source with a concept hierarchy that can be viewed, an
  +          icon will appear to the right of the source selection box; click on the icon to view the hierarchy
  +          in a separate window.
           </p>
           <p class="textbody">
             <table width="725px" 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" /></a></td>
             </tr></table>
  +          <!-- ************* Sources ************** -->
             Click on the
             <a href="#" onclick="javascript:window.open('<%=request.getContextPath() %>/pages/source_help_info.jsf',
             '_blank','top=100, left=100, height=740, width=780, status=no, menubar=no, resizable=yes, scrollbars=yes, toolbar=no, location=no, directories=no');">
  
positive.code:           '_blank','top=100, left=100, height=740, width=780, status=no, menubar=no, resizable=yes, scrollbars=yes, toolbar=no, location=no, directories=no');">
            NCIm Sources</a>).
            <br><br>
            <b>The NCIm Browser</b> is for the retrieval of concepts from the NCI Metathesaurus. It is designed for ease of
            use by a diverse user community. This release focuses on the data and features most users want. Future
            releases will add advanced search options, additional information from source terminologies, and other things
            requested by users. <a href="<%= request.getContextPath() %>/pages/contact_us.jsf">Contact Us</a> to provide feedback
            and get additional help on the NCIm Browser.
            <br><br>
            <b>This help file</b> provides basic information about how to use the NCIm Browser effectively. It also provides
            pointers on how to learn more about NCIm and related resources. The following typeface font conventions are used
  
negative.code:             <td><h2><A NAME="conceptdetails">Concept Details</A></h2></td>
              <td align="right"><a href="#"><img src="<%= request.getContextPath() %>/images/up_arrow.jpg" width="16" height="16" border="0" alt="top" /></a></td>
            </tr></table>
            <!-- ************* Concept Details ************** -->
            Detailed information on the selected concept is grouped and shown on several related pages:
           <ul>
              <li>Tabbed information gives the concepts meaning, labels, and direct relationships:
  