sion_type</span><span class="special">&lt;</span> <a class="link" href="allocator.html" title="Class template allocator">allocator</a><span class="special">,</span> <span class="number">2</span> <span class="special">&gt;</span>                                     <a name="boost.interprocess.allocator.version"></a><span class="identifier">version</span><span class="special">;</span>        

  <span class="comment">// member classes/structs/unions</span>
  <span class="keyword">template</span><span class="s