an><span class="identifier">geometry</span><span class="special">::</span><span class="identifier">strategy</span><span class="special">::</span><span class="identifier">buffer</span><span class="special">::</span><span class="identifier">join_round</span> <span class="identifier">join_strategy</span><span class="special">(</span><span class="number">72</span><span class="special">);</span>

    <span class="comment">// Declare other strategies</span>
    <span class="identifier">boost</span><span class="sp