WIP: link 'supported by the user agent'

index.bs

@@ -896,8 +896,7 @@ spec: encrypted-media-draft; for: EME; urlPrefix: https://w3c.github.io/encrypte
                 <p>
                   If |mimeType| indicates a codec that is used with RTP as defined in the
                   specifications of the corresponding RTP payload formats [[RFC4855]]
-                  [[RFC6838]], and supported by the user agent,
-                  return <code>supported</code>, otherwise return <code>unsupported</code>.
+                  [[RFC6838]], return whether |mimeType| is [=supported by the user agent=].
                 </p>
                 <p class="note">
                   The codec name is typically specified as subtype and zero or more
@@ -911,12 +910,12 @@ spec: encrypted-media-draft; for: EME; urlPrefix: https://w3c.github.io/encrypte
               <li>
                 If |mediaType| is <code>audio</code> and |mimeType|'s [=MIME type/type=]
                 per [[RFC9110]] is neither <code>audio</code> nor <code>application</code>,
-                return <code>unsupported</code>.
+                return <code>false</code>.
               </li>
               <li>
                 If |mediaType| is <code>video</code> and |mimeType|'s [=MIME type/type=]
                 per [[RFC9110]] is neither <code>video</code> nor <code>application</code>,
-                return <code>unsupported</code>.
+                return <code>false</code>.
               </li>
               <li>
                 If the combined <code>type</code> and <code>subtype</code> members
@@ -927,9 +926,7 @@ spec: encrypted-media-draft; for: EME; urlPrefix: https://w3c.github.io/encrypte
                     is not empty, return <code>failure</code>.
                   </li>
                   <li>
-                    If |mimeType| indicates a codec that is supported by the user
-                    agent, return <code>supported</code>, otherwise return
-                    <code>unsupported</code>.
+                    Return whether |mimeType| is [=supported by the user agent=].
                   </li>
                 </ol>
               </li>
@@ -939,17 +936,15 @@ spec: encrypted-media-draft; for: EME; urlPrefix: https://w3c.github.io/encrypte
                   <li>
                     If the <code>parameters</code> member of |mimeType|
                     does not contain a single key named "codecs", return
-                    <code>unsupported</code>.
+                    <code>false</code>.
                   </li>
                   <li>
                     If the value of <code>mimeType.parameters["codecs"]</code>
                     does not describe a single media codec, return
-                    <code>unsupported</code>.
+                    <code>false</code>.
                   </li>
                   <li>
-                    If |mimeType| indicates a codec that is supported by the user
-                    agent, return <code>supported</code>, otherwise return
-                    <code>unsupported</code>.
+                    Return whether |mimeType| is [=supported by the user agent=].
                   </li>
                 </ol>
               </li>