diff --git a/README.md b/README.md
index 047508e..6e31e85 100644
--- a/README.md
+++ b/README.md
@@ -6,6 +6,9 @@ in simple HTML, and have them look like a slide presentation.
 You can see an example presentation here:
 https://andybalaam.gitlab.io/htmlslides/demo.html
 
+(Note that mouse-clicks-to-move-slides are disabled in the demo, but you can
+enable it in your presentations.)
+
 ## Features
 
 * No need to pre-process the HTML before publishing