on can
            be achieved by supplying appropriate template parameters for the <code class="computeroutput"><span class="identifier">lex</span><span class="special">::</span><span class="identifier">lexertl</span><span class="special">::</span><span class="identifier">token</span><span class="special">&lt;&gt;</span></code>
            template while defining the token type.
          </p>
<p>
            The lexer iterator returns the same token type for each of the different
            matched token