diff --git a/ED/protocol.html b/ED/protocol.html
index 6c4d1c65..c30e4c0e 100644
--- a/ED/protocol.html
+++ b/ED/protocol.html
@@ -686,6 +686,12 @@ <h3 property="schema:name">URI Slash Semantics</h3>
                   <p id="uri-slashes-hierarchical-identifier">The slash (<code>/</code>) character in the URI path indicates hierarchical relationship segments, and enables relative referencing [<cite><a class="bibref" href="#bib-rfc3986">RFC3986</a></cite>]. The semantics of the slash character is shared by servers and clients. Paths ending with a slash denote a container resource. [<a href="https://github.com/solid/specification/issues/35#issuecomment-547949014" rel="cito:citesAsSourceDocument">Source</a>]</p>
 
                   <p><span about="" id="server-uri-trailing-slash-distinct" rel="spec:requirement" resource="#server-uri-trailing-slash-distinct"><span property="spec:statement">If two URIs differ only in the trailing slash, and the <span rel="spec:requirementSubject" resource="#Server">server</span> has associated a resource with one of them, then the other URI <span rel="spec:requirementLevel" resource="spec:MUSTNOT">MUST NOT</span> correspond to another resource.</span></span> <span about="" id="server-uri-redirect-differing" rel="spec:requirement" resource="#server-uri-redirect-differing"><span property="spec:statement">Instead, the <span rel="spec:requirementSubject" resource="#Server">server</span> <span rel="spec:requirementLevel" resource="spec:MAY">MAY</span> respond to requests for the latter URI with a 301 redirect to the former.</span></span> [<a href="https://github.com/solid/specification/issues/107#issuecomment-567482817" rel="cito:citesAsSourceDocument">Source</a>]. <span about="" id="server-authorization-redirect" rel="spec:requirement" resource="#server-authorization-redirect"><span property="spec:statement"><span rel="spec:requirementSubject" resource="#Server">Servers</span> <span rel="spec:requirementLevel" resource="spec:MUST">MUST</span> authorize prior to this optional redirect.</span></span> [<a href="https://github.com/solid/specification/issues/107#issuecomment-567454889" rel="cito:citesAsSourceDocument">Source</a>].</p>
+                  <div class="note" id="slash-and-containment" inlist="" rel="schema:hasPart" resource="slash-and-containment">
+                    <h4 property="schema:name"><span>Note</span>: Slash and containement</h4>
+                    <div datatype="rdf:HTML" property="schema:description">
+                      <p>URI Slash Semantic on its own is not sufficient to determine containment. For example <code>/albums/garfield</code> does not entail <code>&lt;/albums/&gt; ldp:contains &lt;/albums/garfield&gt;</code></p>
+                    </div>
+                  </div>
                 </div>
               </section>