diff --git a/index.html b/index.html
index 0fc3c21..a4b5b8d 100644
--- a/index.html
+++ b/index.html
@@ -186,32 +186,32 @@ <h2>
       </p>
       <aside class="issue" data-number="14"></aside>
       <h3>
-        <code><dfn class="element-attr">autoplay</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">autoplay</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">interactive</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">interactive</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">controls</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">controls</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">crossorigin</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">crossorigin</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">height</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">height</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">loading</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">loading</dfn></code> attribute
       </h3>
       <aside class="issue" data-number="44"></aside>
       <h3>
-        <code><dfn class="element-attr">loop</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">loop</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">muted</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">muted</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">poster</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">poster</dfn></code> attribute
       </h3>
       <p>
         The [^model/poster^] attribute gives the URL of an image file that the
@@ -220,10 +220,10 @@ <h3>
         potentially surrounded by spaces</span>.
       </p>
       <h3>
-        <code><dfn class="element-attr">src</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">src</dfn></code> attribute
       </h3>
       <h3>
-        <code><dfn class="element-attr">width</dfn></code> attribute
+        <code><dfn class="element-attr" data-dfn-for="model">width</dfn></code> attribute
       </h3>
     </section>
     <section data-dfn-for="HTMLModelElement">