es for passing parameters, from John Maddock,
        Howard Hinnant, et al.</li>
    <li><a href="compatibility/index.html">compatibility</a> - Help for
      non-conforming standard libraries, from Ralf Grosse-Kunstleve and Jens
      Maurer.</li>
    <li><a href="utility/compressed_pair.htm">compressed_pair</a>
        - Empty member optimization, from John Maddock, Howard
        Hinnant, et al.</li>
    <li><a href="concept_check/concept_check.htm">concept check</a>
        - Tools for generic programm