ost.org/trac/boost/ticket/5701" target="_top">TRAC#5701</a>: lexertl token_value_type returns const unused for nonconst
            ref.
          </li>
<li class="listitem">
            Fixed a problem in the lexer (position_token) causing problems with enabled
            parser debugging (MSVC2010).
          </li>
</ul></div>
</div>
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