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Author: annevk

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@@ -97861,9 +97861,16 @@ interface <dfn>SharedWorkerGlobalScope</dfn> : <span>WorkerGlobalScope</span> {
    <li><p>Let <var>is shared</var> be true if <var>worker</var> is a <code>SharedWorker</code>
    object; otherwise false.</p></li>
 
-   <li><p>Let <var>createsCluster</var> be true if <var>is shared</var> is true or <var>url</var>'s
-   <span data-x="concept-url-scheme">scheme</span> is "<code data-x="">data</code>"; otherwise
-   false.</p></li>
+   <li>
+    <p>Let <var>createsCluster</var> be true if <var>is shared</var> is true or <var>url</var>'s
+    <span data-x="concept-url-scheme">scheme</span> is "<code data-x="">data</code>"; otherwise
+    false.</p>
+
+    <p class="note"><var>url</var> can be used here as a redirect to a <span data-x="data
+    protocol"><code>data:</code> URL</span> results in a network error.</p>
+    <!-- Nevertheless we probably ought to move this in due course to support sandboxing:
+         https://github.com/w3c/webappsec-csp/issues/279 -->
+   </li>
 
    <li><p>Let <var>owner</var> be the <span>relevant owner to add</span> given <var>outside
    settings</var>.</p></li>