Attribute for <IFRAME ...>
NAME

<TABLE ALIGN=RIGHT BORDER=1 BGCOLOR="#FFFFCC">
<TR>
<TD><H4>Facts About Beavers</H4>
<UL>
<LI><A HREF="BeaverHabitat.html" TARGET="BeaverFacts">Habitats</A>
<LI><A HREF="BeaverEat.html" TARGET="BeaverFacts">Food</A>
<LI><A HREF="BabyBeavers.html" TARGET="BeaverFacts">Baby Beavers</A>
</UL>
<IFRAME 
SRC="BeaverHabitat.html"
NAME="BeaverFacts"
WIDTH=300 HEIGHT=200>
</IFRAME></TD>
</TR></TABLE>

produces:

Facts About Beavers Habitats Food Baby Beavers

Notice that in this example we don't include any content inside <IFRAME ...>. In this particular implementation that list of links is sufficient for browsers that don't understand NAME. For browsers such as Netscape, each link will open in a new window. Opening in new windows may be a downside, or it may match nicely with your design.