</th><th>Description</th><th>Default</th>
</tr>


<TR>
<TD><TT>T</TT></TD> 
<TD>The type of property value. Must be both <a
href="http://www.sgi.com/tech/stl/Assignable.html">Assignable</a>
and <a
href="http://www.sgi.com/tech/stl/DefaultConstructible.html">DefaultConstructible</a>.
</TD>
<TD>&nbsp;</td>
</tr>

<TR>
<TD><TT>IndexMap</TT></TD> <TD>Must be a model of <a
href="./ReadablePropertyMap.html">Readable Property Map</a>
and the value type must be convertible to
<tt>std::vector&lt;T&gt;::size_type</tt