--- a/spec/latest/json-ld/index.html	Sat Jun 08 22:48:58 2013 +0200
+++ b/spec/latest/json-ld/index.html	Sat Jun 08 23:23:35 2013 +0200
@@ -331,8 +331,10 @@
         <code>@context</code> keyword is described in detail in
         <a class="sectionRef" href="#the-context"></a>.</dd>
       <dt><code>@id</code></dt>
-      <dd>Used to uniquely identify <em>things</em> that are being described in the document.
-        This keyword is described in <a class="sectionRef" href="#node-identifiers"></a>.</dd>
+      <dd>Used to uniquely identify <em>things</em> that are being described in the document
+        with <tref title="IRI">IRIs</tref> or
+        <tref title="blank node identifier">blank node identifiers</tref>. This keyword
+        is described in <a class="sectionRef" href="#node-identifiers"></a>.</dd>
       <dt><code>@value</code></dt>
       <dd>Used to specify the data that is associated with a particular
         <tref>property</tref> in the graph. This keyword is described in