return a reference.

<p>
<li><b>Qualifiers such as "const" and "volatile".</b> SWIG strips all
qualifiers from the interface presented to the target language.
Besides, what in the heck is "const" in Perl anyways?

<p>
<li><b>Instance Methods</b>.   Method invocations are handled as a function call in which
a pointer to the object (the "this" pointer) appears as the first argument.  For example, in
the following class:

<blockquote>
<pre>
class Foo {
public:
    double bar(double);
};
</pre>
</blockquote>

T