ble of contents
</TD>
<TD>
 &nbsp; 
</TD>
</TR>
<TR>
<TD ALIGN="CENTER">
 [Index] </TD>
<TD ALIGN="CENTER">
Index
</TD>
<TD>
concept index
</TD>
<TD>
 &nbsp; 
</TD>
</TR>
<TR>
<TD ALIGN="CENTER">
 [ ? ] </TD>
<TD ALIGN="CENTER">
About
</TD>
<TD>
this page
</TD>
<TD>
 &nbsp; 
</TD>
</TR>
</TABLE>
<P></P>
where the <STRONG> Example </STRONG> assumes that the current position 
is at <STRONG> Subsubsection One-Two-Three </STRONG> of a document of 
the following structure:
<UL>
<LI> 1. Section One  </LI>
<UL>
<L