lass="nv">isolate</span> <span class="nv">sequential</span> <span class="nv">tokens</span> <span class="nv">in</span> <span class="nv">a</span>
<span class="nv">string</span>, <span class="nv">SOURCE_STRING</span>. <span class="nv">These</span> <span class="nv">tokens</span> <span class="nv">are</span> <span class="nv">delimited</span> <span class="nv">in</span> <span class="nv">the</span> <span class="nv">string</span> <span class="nv">by</span> <span class="nv">at</span>
<span class="nv">least</span> <spa