diff --git a/index.html b/index.html
index ca5c307..32e2269 100644
--- a/index.html
+++ b/index.html
@@ -2159,8 +2159,8 @@ <h3>
             readonly attribute USVString id;
             readonly attribute USVString url;
             readonly attribute PresentationConnectionState state;
-            void close();
-            void terminate();
+            undefined close();
+            undefined terminate();
             attribute EventHandler onconnect;
             attribute EventHandler onclose;
             attribute EventHandler onterminate;
@@ -2168,13 +2168,12 @@ <h3>
             // Communication
             attribute BinaryType binaryType;
             attribute EventHandler onmessage;
-            void send (DOMString message);
-            void send (Blob data);
-            void send (ArrayBuffer data);
-            void send (ArrayBufferView data);
+            undefined send (DOMString message);
+            undefined send (Blob data);
+            undefined send (ArrayBuffer data);
+            undefined send (ArrayBufferView data);
           };
-
-</pre>
+        </pre>
         <div data-dfn-for="PresentationConnection">
           <p>
             The <dfn><code>id</code></dfn> attribute specifies the