diff --git a/images/content-venn.svg b/images/content-venn.svg
index a0ff22331ca..b6a4cc8c2d1 100644
--- a/images/content-venn.svg
+++ b/images/content-venn.svg
@@ -172,7 +172,7 @@
    <div xmlns="http://www.w3.org/1999/xhtml">
     <h1>Interactive content</h1>
     <ul>
-     <li><code>a</code></li>
+     <li><code>a</code>*</li>
      <li><code>audio</code>*</li>
      <li><code>button</code></li>
      <li><code>details</code></li>
diff --git a/source b/source
index ea0c892a6f5..fa7b6fe34a1 100644
--- a/source
+++ b/source
@@ -9749,7 +9749,7 @@ http://software.hixie.ch/utilities/js/live-dom-viewer/?%3C%21DOCTYPE%20HTML%3E%0
 
   <!-- when updating this also update the category index -->
   <ul class="brief category-list">
-   <li><code>a</code></li>
+   <li><code>a</code> (if the <code data-x="attr-hyperlink-href">href</code> attribute is present)</li>
    <li><code>audio</code> (if the <code data-x="attr-media-controls">controls</code> attribute is present)</li>
    <li><code>button</code></li>
    <li><code>details</code></li>
@@ -17407,12 +17407,12 @@ included with Exhibit B.
    <dt><span data-x="concept-element-categories">Categories</span>:</dt>
    <dd><span>Flow content</span>.</dd>
    <dd><span>Phrasing content</span>.</dd>
-   <dd><span>Interactive content</span>.</dd>
+   <dd>If the element has a <code data-x="attr-hyperlink-href">href</code> attribute: <span>Interactive content</span>.</dd>
    <dd><span>Palpable content</span>.</dd>
    <dt><span data-x="concept-element-contexts">Contexts in which this element can be used</span>:</dt>
    <dd>Where <span>phrasing content</span> is expected.</dd>
    <dt><span data-x="concept-element-content-model">Content model</span>:</dt>
-   <dd><span>Transparent</span>, but there must be no <span>interactive content</span> descendant.</dd>
+   <dd><span>Transparent</span>, but there must be no <span>interactive content</span> or <code>a</code> element descendants.</dd>
    <dt><span data-x="concept-element-attributes">Content attributes</span>:</dt>
    <dd><span>Global attributes</span></dd>
    <dd><code data-x="attr-hyperlink-href">href</code></dd>
@@ -115283,7 +115283,6 @@ if (s = prompt('What is your name?')) {
     <tr>
      <td> <span>Interactive content</span>*
      <td>
-      <code>a</code>;
       <code>button</code>;
       <code>details</code>;
       <code>embed</code>;
@@ -115293,6 +115292,7 @@ if (s = prompt('What is your name?')) {
       <code>select</code>;
       <code>textarea</code>
      <td>
+      <code>a</code> (if the <code data-x="attr-hyperlink-href">href</code> attribute is present);
       <code>audio</code> (if the <code data-x="attr-media-controls">controls</code> attribute is present);
       <code>img</code> (if the <code data-x="attr-hyperlink-usemap">usemap</code> attribute is present);
       <code>input</code> (if the <code data-x="attr-input-type">type</code> attribute is <em>not</em> in the <span data-x="attr-input-type-hidden">Hidden</span> state);