--- a/ttml2/spec/ttml2.xml	Wed Jan 14 09:53:09 2015 -0700
+++ b/ttml2/spec/ttml2.xml	Wed Jan 14 11:42:11 2015 -0700
@@ -1610,6 +1610,11 @@
 TTML documents and processors.</p>
 <div2 id="conformance-content">
 <head>Document Conformance</head>
+<ednote>
+<name>Media Type Parameters</name>
+<date>2015-01-14</date>
+<edtext>Update step (1) below to account for to be defined <code>processorprofiles</code> media type parameter.</edtext>
+</ednote>
 <p>A <loc href="#terms-timed-text-document-instance">timed text document instance</loc> conforms to this specification if the following criteria are
 satisfied:</p>
 <olist>