= "#constructing_tuples">Constructing tuples</a></li>
<li><a href = "#accessing_elements">Accessing tuple elements</a></li>
<li><a href = "#construction_and_assignment">Copy construction and tuple assignment</a></li>
<li><a href = "#relational_operators">Relational operators</a></li>
<li><a href = "#tiers">Tiers</a></li>
<li><a href = "#streaming">Streaming</a></li>
<li><a href = "#performance">Performance</a></li>
<li><a href = "#portability">Portability</a></li>
<li><a href = "#thanks">Acknowledgements</a