eyword">namespace</span> <span class="identifier">lex</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">spirit</span><span class="special">::</span><span class="identifier">lex</span><span class="special">;</span>
</pre>
<p>
        </p>
<h6>
<a name="spirit.lex.tutorials.lexer_quickstart1.h1"></a>
          <span class="phrase"><a name="spirit.lex.tutorials.lexer_quickstart1.defining_tokens"></a></span><a class="link" href="le