diff --git a/submit.html b/submit.html
index dfec93c..39d8936 100644
--- a/submit.html
+++ b/submit.html
@@ -28,6 +28,7 @@ Documentation as :
 <li><a href=https://fabien.benetou.fr/pub/home/future_of_text_demo/engine/>live result</a> (ideally in VR) and</li> 
 <li>open-source <a href=https://git.benetou.fr/utopiah/text-code-xr-engine/issues>code repository</a> of the code and to make your own suggestions via issues. </li>
 <li><a href=qrcode.png>QRcode</a> of this page to share with others also on mobile.</li>
+<li><a href=https://fabien.benetou.fr/pub/home/future_of_text_demo/engine/?background=../content/future_of_text_symposium/HORN-2001-FutureOfHumanCognomeCL.png&fontcolor=lightgray>background</a> as URL parameter. Feel free to use your own content.</li>
 </ul>
 <script>
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