entifier">basic_string</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span>  <a class="link" href="basic_environment/entry_type.html#boost.process.basic_environment.entry_type.string_type"><span class="identifier">string_type</span></a><span class="special">;</span>  
    <span class="keyword">typedef</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">iterator_range</span><span class="special">&l