--- a/ttml10-sdp-us/Overview.html	Mon Nov 12 09:31:32 2012 -0700
+++ b/ttml10-sdp-us/Overview.html	Mon Nov 12 10:32:48 2012 -0700
@@ -905,7 +905,7 @@
 </section>
 <section class="Core_Constraints" id="constraints-8">
 <h4><span class="secno">6.4.2 </span>Constraints</h4>
-<div><div class="numbered" title="R0020">deleted</div></div>
+<div><div class="numbered" title="R0020">The origin and extent of a region <em class="rfc2119" title="must not">must not</em> be specified such that the region extends outside of the root container.</div></div>
 </section>
 <section class="informative" id="examples">
 <h4><span class="secno">6.4.3 </span>Examples</h4><p><em>This section is non-normative.</em></p>
@@ -2868,4 +2868,4 @@
 
 <section id="references" class="appendix"><!--OddPage--><h2><span class="secno">D. </span>References</h2><section id="normative-references"><h3><span class="secno">D.1 </span>Normative references</h3><dl class="bibliography"><dt id="bib-RFC2119">[RFC2119]</dt><dd>S. Bradner. <a href="http://www.ietf.org/rfc/rfc2119.txt"><cite>Key words for use in RFCs to Indicate Requirement Levels.</cite></a> March 1997. Internet RFC 2119.  URL: <a href="http://www.ietf.org/rfc/rfc2119.txt">http://www.ietf.org/rfc/rfc2119.txt</a> 
 </dd><dt id="bib-TTML10">[TTML10]</dt><dd>G. Adams. <a href="http://www.w3.org/TR/2010/REC-ttaf1-dfxp-20101118/"><cite>Timed Text Markup Language (TTML) 1.0</cite></a> W3C Recommendation. URL: <a href="http://www.w3.org/TR/2010/REC-ttaf1-dfxp-20101118/">http://www.w3.org/TR/2010/REC-ttaf1-dfxp-20101118/</a>
-</dd></dl></section></section></body></html>
+</dd></dl></section></section></body></html>
\ No newline at end of file

--- a/ttml10-sdp-us/Overview.src.html	Mon Nov 12 09:31:32 2012 -0700
+++ b/ttml10-sdp-us/Overview.src.html	Mon Nov 12 10:32:48 2012 -0700
@@ -704,7 +704,7 @@
 </section>
 <section class='Core_Constraints'>
 <h4>Constraints</h4>
-<div data-transform='constraint'>deleted</div>
+<div data-transform='constraint'>The origin and extent of a region MUST NOT be specified such that the region extends outside of the root container.</div>
 </section>
 <section class='informative'>
 <h4>Examples</h4>