Make it recommended

index.bs

@@ -945,8 +945,8 @@ values:
 :: An identifier for this remote playback.  It should be universally unique
     among all remote playbacks.
 
-Note: A version 4 (pseudorandom) [=UUID=] meets the requirements for a
-remote-playback-id.
+Note: A version 4 (pseudorandom) [=UUID=] is recommended as it meets the
+requirements for a remote-playback-id.
 
 : urls
 :: The [=media resources=] that the controller has selected for playback on the

index.html

@@ -1214,7 +1214,7 @@
 </style>
   <meta content="Bikeshed version 220086d88511a9c99d7a1f9b5447db7e7b99e053" name="generator">
   <link href="https://webscreens.github.io/openscreenprotocol/" rel="canonical">
-  <meta content="65c93f4e8cf9d44c8a9a6d79663d8590d5c9026d" name="document-revision">
+  <meta content="31226ab5709d7694feb6784fde0aae502032c3e5" name="document-revision">
 <style>
 .highlight .hll { background-color: #ffffcc }
 .highlight .c { color: #999988; font-style: italic } /* Comment */
@@ -2343,8 +2343,8 @@ <h2 class="heading settled" data-level="8" id="remote-playback-protocol"><span c
      <p>An identifier for this remote playback.  It should be universally unique
 among all remote playbacks.</p>
    </dl>
-   <p class="note" role="note"><span>Note:</span> A version 4 (pseudorandom) <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc4122#section-4.4" id="ref-for-section-4.4">UUID</a> meets the requirements for a
-remote-playback-id.</p>
+   <p class="note" role="note"><span>Note:</span> A version 4 (pseudorandom) <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc4122#section-4.4" id="ref-for-section-4.4">UUID</a> is recommended as it meets the
+requirements for a remote-playback-id.</p>
    <dl>
     <dt data-md>urls
     <dd data-md>