target="_top">Boost.Range</a>
        the system has to by changed:
      </p>
<p>
</p>
<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">lorenz</span>
<span class="special">{</span>
    <span class="keyword">template</span><span class="special">&lt;</span> <span class="keyword">class</span> <span class="identifier">State</span> <span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Deriv</span> <span class="special">&gt;</span>
    