<span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span>                             <a name="boost.interprocess.adaptive_pool.reference"></a><span class="identifier">reference</span><span class="special">;</span>      
  <span class="keyword">typedef</span> <span class="emphasis"><em><span class="identifier">unspecified</span></em></span>                             <a name="boost.interprocess.adaptive_pool.const_reference"></a><span class="ide