he graph.

<P>

<H2><A NAME="sec:exterior-properties"></A>
Exterior Properties
</H2>

<P>
In this section we will describe two methods for constructing exterior
property maps, however there is an unlimited number of ways that
one could create exterior properties for a graph.

<P>
The first method uses the adaptor class
<TT>random_access_iterator_property_map</TT>. This
class wraps a random access iterator, creating a property map out
of it. The random access iterator must point to the beginning of a
range o