Describe how a manifest can be updated with id

w3c · Jul 15, 2021 · d3885d2 · d3885d2
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@@ -1262,6 +1262,13 @@ <h3>
             Updating the manifest
           </h3>
           <aside class="issue" data-number="446"></aside>
+          <p>
+            User agents MAY re-fetch and update a manifest for an installed web
+            application and apply updated manifest to its <a>application
+             context</a>. When a manifest is processed, user agents can
+            determine whether it's an installed application that can be updated
+            or a new application by comparing application's [=manifest/id=].
+          </p>
         </section>
       </section>
     </section>