diff --git a/index.html b/index.html
index 9783167..4af46b4 100644
--- a/index.html
+++ b/index.html
@@ -38,9 +38,6 @@
 	<!-- Animate plugin -->
 	<script src="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/animate/plugin.js"></script>
   <script src="https://cdnjs.cloudflare.com/ajax/libs/svg.js/3.1.2/svg.min.js"></script>
-<!--
-	<script src="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/animate/svg.min.js"></script>
--->
 
 	<!-- Anything plugin -->
 	<script src="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/anything/plugin.js"></script>
@@ -59,10 +56,7 @@
 	<script src="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/audio-slideshow/RecordRTC.js"></script>
 
 	<!-- Chalkboard plugin -->
-<!--
 	<script src="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/chalkboard/plugin.js"></script>
--->
-	<script src="chalkboard.js"></script>
 	<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/reveal.js-plugins@latest/chalkboard/style.css">
 
 	<!-- Chart plugin -->
@@ -265,7 +259,6 @@ <h2>The end</h2>
 		},
 		seminar: {
 			server: 'http://localhost:4433', // change server as necessary
-//			server: 'https://b36f680.online-server.cloud:4433', // change server as necessary
 			room: document.title, // put your room name here
 			hash: '$2a$05$1LAJBcCgJeHc7chZJKKeNeIw3RQaEK9b6ZfprhiDjHquUI4GMDwTu', // a hash is required for every seminar room and can be generated on the URL of the socket.io server
 			autoJoin: true, // set to true to automatically join the seminar room