% ...
</pre></div>

<p>
Since accessor functions provide a mechanism for accessing the
internals of an object, the interpreter does not need to know anything
about the actual representation of a <tt>Vector</tt>.
</p>

<H3><a name="Scripting_nn8">4.2.5 Proxy classes</a></H3>


<p>
In certain cases, it is possible to use the low-level accessor functions
to create a proxy class, also known as a shadow class.
A proxy class is a special kind of object that gets created
in a scripting language to access a C/C++ c