diff --git a/web/democode/demo.html b/web/democode/demo.html
index 8f200d9..50a4343 100644
--- a/web/democode/demo.html
+++ b/web/democode/demo.html
@@ -57,6 +57,9 @@ the "View Source" function of your browser to view it, or have a look at
 	target="_blank">the project sources on GitHub</a>.
 </p>
 
+<!-- Thank you to LanX from PerlMonks for the inspiration! :-)
+     https://www.perlmonks.org/?node_id=1223812 -->
+
 <!-- First, you have to include the following hidden IFrame, which
 loads the "Perl runner". This is (currently) necessary because this
 IFrame needs to re-load itself in order to re-run Perl. This IFrame