--- a/ttml2/spec/ttml2-changes.html	Mon Jun 16 20:33:15 2014 -0700
+++ b/ttml2/spec/ttml2-changes.html	Thu Jun 19 07:57:27 2014 -0600
@@ -172,6 +172,8 @@
 * In 8.4.4, add semantics for determining specified style set and computed
   style set for 'set' element.
 
+* In 10.2.3, specify that a duration (@dur) of zero is explicitly permitted.
+
 * In 11, add new sub-section (11.3) defining animation specific value
   expressions.
 

--- a/ttml2/spec/ttml2.xml	Mon Jun 16 20:33:15 2014 -0700
+++ b/ttml2/spec/ttml2.xml	Thu Jun 19 07:57:27 2014 -0600
@@ -9651,7 +9651,7 @@
 <p>The semantics of the <att>dur</att> attribute are those defined
 by <bibref ref="smil3"/>, &sect; 5.4.3,
 while taking into account any overriding semantics defined by this specification.
-In a willful violation of <bibref ref="smil3"/>, &sect; 5.4.3, the value of
+In a deliberate divergence from <bibref ref="smil3"/>, &sect; 5.4.3, the value of
 the <att>dur</att> attribute is permitted to be zero (0).</p>
 <note role="elaboration">
 <p>In the context of the subset of <bibref ref="smil3"/> semantics supported by