--- a/schema.org/ext/tvradio.html	Mon Feb 25 15:40:07 2013 +0000
+++ b/schema.org/ext/tvradio.html	Mon Feb 25 16:40:08 2013 +0000
@@ -221,7 +221,7 @@
 
     <div typeof="rdfs:Class" resource="http://schema.org/PublicationEvent">
       <span class="h" property="rdfs:label">Publication event</span>
-      <span property="rdfs:comment">A publication of a program, e.g. a broadcast event or an on-demand event.</span>
+      <span property="rdfs:comment">A PublicationEvent corresponds indifferently to the event of publication for a CreativeWork of any type e.g. a broadcast event, an on-demand event, a book/journal publication via a variety of delivery media.</span>
       <span>Subclass of: <a property="rdfs:subClassOf" href="http://schema.org/PublicationEvent">Event</a></span>
     </div>