Merge pull request #2428 from w3c/scottaohara-patch-1

add note to img alt="" table

Author: scottaohara

html-aam/index.html

@@ -3137,16 +3137,14 @@ <h4 id="el-img">`img`</h4>
             </tr>
           </tbody>
         </table>
-        <h4 id="el-img-empty-alt">`img` <span class="el-context">(`alt` attribute value is the empty string, i.e. `alt=""` or `alt` with no value in the markup)</span></h4>
+        <h4 id="el-img-empty-alt">`img` <span class="el-context">(`alt` attribute value is the empty string, i.e., `alt=""` or `alt` with no value in the markup))</span></h4>
         <table aria-labelledby="el-img-empty-alt">
           <tbody>
             <tr>
               <th>HTML Specification</th>
               <td>
                 <a data-cite="html">`img`</a>
-                <span class="el-context"
-                  >(<a data-cite="html/embedded-content.html#attr-img-alt">`alt`</a> attribute value is the empty string, i.e., `alt=""` or `alt` with no value in the markup)</span
-                >
+                <span class="el-context">(<a data-cite="html/embedded-content.html#attr-img-alt">`alt`</a> attribute value is the empty string, i.e., `alt=""` or `alt` with no value in the markup)</span>
               </td>
             </tr>
             <tr>
@@ -3191,7 +3189,13 @@ <h4 id="el-img-empty-alt">`img` <span class="el-context">(`alt` attribute value
             <!-- <th><a href="#accessible-name-and-description-computation">Naming Algorithm</a></th> -->
             <tr>
               <th>Comments</th>
-              <td></td>
+              <td>
+                <p class="note">
+                  If an `img` has an empty `alt`, but has been provided an <a data-cite="accname-1.2/#dfn-accessible-name">accessible name</a> 
+                  via another valid naming mechanism per the <a href="#el-img-name">naming steps of this specification</a>, user agents will expose the element 
+                  with its implicit `image` role.
+                </p>
+              </td>
             </tr>
           </tbody>
         </table>
@@ -16261,7 +16265,7 @@ <h4>`figure` Element Accessible Name Computation</h4>
           </ol>
         </section>
         <section>
-          <h4>`img` Element Accessible Name Computation</h4>
+          <h4 id="el-img-name">`img` Element Accessible Name Computation</h4>
           <ol>
             <li>
               If the `img` element has an <a data-cite="wai-aria-1.2/#aria-label">`aria-label`</a> or an <a data-cite="wai-aria-1.2/#aria-labelledby">`aria-labelledby`</a> attribute the