diff --git a/source b/source
index 02fee399df0..4d14323d629 100644
--- a/source
+++ b/source
@@ -116110,11 +116110,6 @@ interface <dfn>HTMLMarqueeElement</dfn> : <span>HTMLElement</span> {
   data-x="dom-marquee-stop">stop()</code></dfn> method is called, the <code>marquee</code> element
   must be <span data-x="concept-marquee-off">turned off</span>.</p>
 
-  <p>When a <code>marquee</code> element is created, the user agent must <span>queue an element
-  task</span> on the <span>DOM manipulation task source</span> given the <code>marquee</code>
-  element to <span data-x="concept-event-fire">fire an event</span> named <code undefined
-  data-x="event-marquee-start">start</code> at the element.</p>
-
   <hr>
 
   <p>The <dfn element-attr for="marquee"><code data-x="attr-marquee-behavior">behavior</code></dfn>
@@ -116231,45 +116226,13 @@ interface <dfn>HTMLMarqueeElement</dfn> : <span>HTMLElement</span> {
 
    <li><p>Increment the <span>marquee current loop index</span> by one.</p></li>
 
-   <li>
-    <p>If the <span>marquee current loop index</span> is now equal to or greater than the element's
-    <span>marquee loop count</span>, <span data-x="concept-marquee-off">turn off</span> the
-    <code>marquee</code> element and <span>queue an element task</span> on the <span>DOM
-    manipulation task source</span> given the <code>marquee</code> element to <span
-    data-x="concept-event-fire">fire an event</span> named <code undefined
-    data-x="event-marquee-finish">finish</code> at the <code>marquee</code> element.</p>
-
-    <p>Otherwise, if the <code data-x="attr-marquee-behavior">behavior</code> attribute is in the
-    <span data-x="attr-marquee-behavior-alternate">alternate</span> state, then <span>queue an
-    element task</span> on the <span>DOM manipulation task source</span> given the
-    <code>marquee</code> element to <span data-x="concept-event-fire">fire an event</span> named
-    <code undefined data-x="event-marquee-bounce">bounce</code> at the <code>marquee</code> element.</p>
-
-    <p>Otherwise, <span>queue an element task</span> on the <span>DOM manipulation task
-    source</span> given the <code>marquee</code> element to <span data-x="concept-event-fire">fire
-    an event</span> named <code undefined data-x="event-marquee-start">start</code> at the
-    <code>marquee</code> element.</p>
-   </li>
+   <li><p>If the <span>marquee current loop index</span> is now equal to or greater than the
+   element's <span>marquee loop count</span>, <span data-x="concept-marquee-off">turn off</span> the
+   <code>marquee</code> element.</p></li>
   </ol>
 
   <hr>
 
-  <p>The following are the <span>event handlers</span> (and their corresponding <span data-x="event
-  handler event type">event handler event types</span>) <span w-nodev>that must be</span> supported,
-  as <span>event handler content attributes</span> and <span>event handler IDL attributes</span>, by
-  <code>marquee</code> elements:</p>
-
-  <table>
-   <thead>
-    <tr><th><span data-x="event handlers">Event handler</span> <th><span>Event handler event type</span>
-   <tbody>
-    <tr><td><dfn attribute for="HTMLMarqueeElement"><code data-x="handler-marquee-onbounce">onbounce</code></dfn> <td> <code undefined data-x="event-marquee-bounce">bounce</code>
-    <tr><td><dfn attribute for="HTMLMarqueeElement"><code data-x="handler-marquee-onfinish">onfinish</code></dfn> <td> <code undefined data-x="event-marquee-finish">finish</code>
-    <tr><td><dfn attribute for="HTMLMarqueeElement"><code data-x="handler-marquee-onstart">onstart</code></dfn> <td> <code undefined data-x="event-marquee-start">start</code>
-  </table>
-
-  <hr>
-
   <p>The <dfn attribute for="HTMLMarqueeElement"><code
   data-x="dom-marquee-behavior">behavior</code></dfn>, <dfn attribute for="HTMLMarqueeElement"><code
   data-x="dom-marquee-direction">direction</code></dfn>, <dfn attribute