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<a name="iterator.intro"></a><a class="link" href="index.html#iterator.intro" title="Introduction">Introduction</a>
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<p>
      The Boost Iterator Library contains two parts. The first is a system of <a href="http://www.boost.org/more/generic_programming.html#concept" target="_top">concepts</a>
      which extend the C++ standard iterator requirements. The second is a framework
      of components for buil