diff --git a/public/sample/index.js b/public/sample/index.js
index 8d74748..4b74cfe 100644
--- a/public/sample/index.js
+++ b/public/sample/index.js
@@ -83,6 +83,7 @@ $(document).ready(function() {
     var top = new Layer(); // new Layer() will be automatically activated at the moment.
 
     //networking - socket.io
+    //N.B.: auto-detecting hostname, assuming websocket server is running @ root of the host
     var socket = io(window.location.protocol + "//" + window.location.host);
 
     //net. connection marker