o instantiate the serialization code for the included archives.
</ul>

To make this work, the following should be included after the archive
class definition.
<pre><code>
#define BOOST_SERIALIZATION_REGISTER_ARCHIVE(Archive)
</code></pre>
Failure to do this will not inhibit the program from compiling, linking
and executing properly - except in one case.  If an instance of a derived
class is serialized through a pointer to its base class, the program
will throw an
<a href="exceptions.html#unregistered_class"