--- a/ttml10/spec/ttaf1-dfxp.xml	Thu Jul 18 20:50:52 2013 -0600
+++ b/ttml10/spec/ttaf1-dfxp.xml	Fri Aug 09 10:11:48 2013 -0600
@@ -696,8 +696,9 @@
 <gitem>
 <label>Related Media Object Region</label>
 <def>
-<p>When a non-null <emph>Related Media Object</emph> exists, the region in which
-a presentation processor presents this media object.</p>
+<p>When a non-null <emph>Related Media Object</emph> exists, the region of this media object,
+expressed in the coordinate system that applies to the Document Instance that is associated with the
+related media object.</p>
 </def>
 </gitem>
 <gitem>

--- a/ttml10/spec/ttml-changes.html	Thu Jul 18 20:50:52 2013 -0600
+++ b/ttml10/spec/ttml-changes.html	Fri Aug 09 10:11:48 2013 -0600
@@ -43,6 +43,8 @@
 
 * In 1.2, add note explaining that use of <p/> element may be presentational or semantic
   according to intentions of author.
+* In 2.2, change the definition of "Related Media Object Region" to not imply that a
+  TTML presentation processor is responsible for presenting the related media object.
 * In 3.2.1, change "TTML Content profile" to "TTML profile", since TTML profiles are not
   presently defined as content profiles but as processor profiles.
 * In 6.1.1, change "TTML Content profile" to "TTML profile", since TTML profiles are not

--- a/ttml2/spec/ttml2.xml	Thu Jul 18 20:50:52 2013 -0600
+++ b/ttml2/spec/ttml2.xml	Fri Aug 09 10:11:48 2013 -0600
@@ -696,8 +696,9 @@
 <gitem>
 <label>Related Media Object Region</label>
 <def>
-<p>When a non-null <emph>Related Media Object</emph> exists, the region in which
-a presentation processor presents this media object.</p>
+<p>When a non-null <emph>Related Media Object</emph> exists, the region of this media object,
+expressed in the coordinate system that applies to the Document Instance that is associated with the
+related media object.</p>
 </def>
 </gitem>
 <gitem>