ial">::</span><span class="identifier">lexertl</span><span class="special">::</span><span class="identifier">lexer</span><span class="special">&lt;</span><span class="identifier">BaseIterator</span><span class="special">&gt;</span></code>)
          defines which underlying lexer engine has to be used to provide the required
          state machine functionality. In this example we use the Lexertl based lexer
          engine as the underlying lexer type.
        </p>
<p>
</p>
<pre class="programlisting"><s