Added notes on Web Workers

experiments/democode/perlrunner.html

@@ -25,6 +25,14 @@ You should have received a copy of the licenses along with this program.
 If not, see http://perldoc.perl.org/index-licence.html
 -->
 
+<!-- Possible To-Do for Later: This whole thing could probably also be
+	accomplished with a Web Worker, but that would probably require a
+	stripped-down version of webperl.js (that loads things without
+	using window.* and especially document.*
+	https://developer.mozilla.org/en-US/docs/Web/API/Worker/Worker
+	https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/importScripts
+	-->
+
 <script src="../webperl.js"></script>
 <!--script src="https://webperlcdn.zero-g.net/v0.07-beta/webperl.js"
 	integrity="sha256-jL8SB7St5ou4+hb0frK0k6VCQXsWQ1wolDrdU7i4juc" crossorigin="anonymous"></script-->