define fcrepo:PreferCompactLists IRI for Prefer header values

fcrepo.ttl

@@ -15,6 +15,14 @@
     vann:preferredNamespaceUri "http://fedora.info/definitions/fcrepo#" ;
     vann:preferredNamespacePrefix "fcrepo" .
 
+:PreferCompactLists a rdfs:Resource ;
+    rdfs:label "prefer compact lists"@en ;
+    rdfs:comment "An IRI to signal the client prefers to receive the
+    rdfs:List values for triples in a compact style where defined by the
+    serialization."@en ;
+    rdfs:isDefinedBy : ;
+    vs:term_status "working-draft" .
+
 :PreferInboundReferences a rdfs:Resource ;
     rdfs:label "prefer inbound references"@en ;
     rdfs:comment "An IRI to signal the client prefers to receive the set of triples representing other repository resources which link to a given resource."@en ;

index.html

@@ -468,6 +468,14 @@ <h2>Additional values for the <code>Prefer</code> header</h2>
               triples from any <a>LDP-RS</a> housed in that server that feature the requested resource as RDF-object.
             </li>
           </ul>
+          <p>
+            An implementation MAY support the value
+            <code>http://fedora.info/definitions/fcrepo#PreferCompactLists</code>
+            when making <code>GET</code> requests on <a>LDPR</a> resources.
+            <code>http://fedora.info/definitions/fcrepo#PreferCompactLists</code> requests that a server use a compact syntax to represent
+            rdfs:List of triple values where supported by the serialization
+            (e.g., the compact list representations in Turtle or JSON-LD).
+          </p>
         </section>
         <section id="httpGETLDPRS">
           <h2><a>LDP-RS</a>s</h2>