--- a/spec/latest/json-ld-api/index.html	Mon Apr 01 20:23:24 2013 +0200
+++ b/spec/latest/json-ld-api/index.html	Mon Apr 01 20:35:17 2013 +0200
@@ -3276,7 +3276,16 @@
       <tref>default graph</tref> and zero or more
       <tref title="named graph">named graphs</tref> into a JSON-LD document.</p>
 
-    <p class="note">This algorithm does not support lists containing lists.</p>
+    <p class="issue atrisk" title="Feature at risk">In the interest of space and
+      simplicity, the steps necessary for handling lists of lists have been omitted.
+      Such lists and their elements must, recursively, be handled like other lists.
+      Lists of lists can, however, not be represented in JSON-LD using <code>@list</code>;
+      they have to be represented as a set of interlinked node objects using RDF's
+      <code>rdf:first</code> and <code>rdf:rest</code> properties.
+      <em>NOTE:</em> this is an at-risk feature. The Working Group might either require
+      handling of lists-of-lists or forbid them in JSON-LD. Implementers please send
+      reports of whether you are able to implement handling for lists-of-lists or
+      would instead request such structures be disallowed.</p>
 
     <section class="informative">
       <h3>Overview</h3>