diff --git a/source b/source
index 142c43dfb1f..288b6942eeb 100644
--- a/source
+++ b/source
@@ -80593,11 +80593,10 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
   data-x="dom-ToggleEvent-newState">newState</code></dfn> attributes must return the values they are
   initialized to.</p>
 
-  <p>The <dfn attribute for="ToggleEvent"><code
-  data-x="dom-ToggleEvent-source">source</code></dfn> getter steps are to return the result of
-  <span data-x="dom-retarget">retargeting</span> <code
-  data-x="dom-ToggleEvent-source">source</code> against <span>this</span>'s <code
-  data-x="dom-Event-currentTarget">currentTarget</code>.</p>
+  <p>The <dfn attribute for="ToggleEvent"><code data-x="dom-ToggleEvent-source">source</code></dfn>
+  getter steps are to return the result of <span>retarget against an event</span> given
+  <span>this</span> and <span>this</span>'s <code
+  data-x="dom-ToggleEvent-source">source</code>.</p>
 
   <p class="XXX"><a href="https://github.com/whatwg/dom/issues/1328">DOM standard issue #1328</a>
   tracks how to better standardize associated event data in a way which makes sense on Events.
@@ -80651,15 +80650,25 @@ dictionary <dfn dictionary>CommandEventInit</dfn> : <span>EventInit</span> {
 
   <p>The <dfn attribute
   for="CommandEvent"><code data-x="dom-CommandEvent-source">source</code></dfn> getter steps are to
-  return the result of <span data-x="dom-retarget">retargeting</span> <code
-  data-x="dom-CommandEvent-source">source</code> against <span>this</span>'s <code
-  data-x="dom-Event-currentTarget">currentTarget</code>.</p>
+  return the result of <span>retarget against an event</span> given <span>this</span> and
+  <span>this</span>'s <code data-x="dom-CommandEvent-source">source</code>.</p>
 
   <p class="XXX"><a href="https://github.com/whatwg/dom/issues/1328">DOM standard issue #1328</a>
   tracks how to better standardize associated event data in a way which makes sense on Events.
   Currently an event attribute initialized to a value cannot also have a getter, and so an internal
   slot (or map of additional fields) is required to properly specify this.</p>
 
+  <p>To <dfn>retarget against an event</dfn>, given an <code>Event</code> <var>event</var> and a
+  <code>Node</code> <var>node</var>:</p>
+
+  <ol>
+   <li><p>If <var>event</var>'s <span data-x="concept-event-target">target</span> is null, then
+   return null.</p></li>
+
+   <li><p>Return the result of <span data-x="dom-retarget">retargeting</span> <var>node</var>
+   against <var>event</var>'s <span data-x="concept-event-target">target</span>.</p></li>
+  </ol>
+
   <h3>Focus</h3>
 
   <!-- https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=2807 -->