diff --git a/guidelines/sc/21/content-on-hover-or-focus.html b/guidelines/sc/21/content-on-hover-or-focus.html
index 80f97fda79..a41377e341 100644
--- a/guidelines/sc/21/content-on-hover-or-focus.html
+++ b/guidelines/sc/21/content-on-hover-or-focus.html
@@ -19,9 +19,9 @@ <h4>Content on Hover or Focus</h4>
 
   </dl>
     	
-    	<p>Exception: The visual presentation of the additional content is controlled by the <a>user agent</a> and is not modified by the author.</p>
+    	<p>Exception: The visual presentation of the additional content is determined by the <a>user agent</a> and is not modified by the author.</p>
 
-    	<p class="note">Examples of additional content controlled by the user agent include browser tooltips created through use of the HTML <a href="https://html.spec.whatwg.org/multipage/dom.html#the-title-attribute"><code>title</code> attribute</a> [[HTML]].</p>
+    	<p class="note">Examples of additional content where the visual presentation is determined by the user agent include browser tooltips created through use of the HTML <a href="https://html.spec.whatwg.org/multipage/dom.html#the-title-attribute"><code>title</code> attribute</a> [[HTML]].</p>
      <p class="note">Custom tooltips, sub-menus, and other nonmodal popups that display on hover and focus are examples of additional content covered by this criterion.</p>
      <p class="note">This criterion applies to content that appears in addition to the triggering component itself. Since hidden components that are made visible on keyboard focus (such as links used to skip to another part of a page) do not present additional content they are not covered by this criterion.</p>
   </section>