d">if</span><span class="special">(</span><span class="identifier">s</span> <span class="special">==</span> <span class="string">"quit"</span><span class="special">)</span> <span class="keyword">break</span><span class="special">;</span>
      <span class="special">}</span>
      <span class="keyword">else</span>
         <span class="identifier">s</span> <span class="special">=</span> <span class="string">"This is a string of tokens"</span><span class="special">;</span>

      <span class="identifier">boos