algorithm such
as the color property used in <TT>breadth_first_search()</TT>.  When
using exterior properties with a BGL algorithm a property map
object for the exterior property must be passed as an argument to the
algorithm.
</DD>
</DL>

<P>

<H2><A NAME="sec:interior-properties"></A>
Interior Properties
</H2>

<P>
A graph type that supports interior property storage (such as
<TT>adjacency_list</TT>) provides access to its property map
objects through the interface defined in <a
href="./PropertyGraph.html