--- a/spec/latest/json-ld-syntax/index.html	Sat May 05 17:00:54 2012 +0800
+++ b/spec/latest/json-ld-syntax/index.html	Sat May 05 21:22:48 2012 +0800
@@ -2860,6 +2860,9 @@
   <dd>W3C</dd>
 </dl>
 
+<p>In JSON-LD a fragment identifier MAY identify a node in the <tref>linked data graph</tref>
+  expressed in the document. This idiom, which is also used in RDF [[RDF-CONCEPTS]], gives a simple way to "mint" new, document-local IRIs to label nodes and therefore contributes considerably to the expressive power of JSON-LD.
+
 </section>
 
 <section class="appendix informative">