--- a/ttml-ww-profiles/ttml-ww-profiles.html	Thu Aug 14 15:12:45 2014 +0200
+++ b/ttml-ww-profiles/ttml-ww-profiles.html	Thu Aug 14 17:31:05 2014 +0200
@@ -217,7 +217,7 @@
   </p>
   <h1 class="title p-name" id="title" property="dcterms:title">TTML Text and Image Profiles for Internet Media Subtitles and Captions 1.0</h1>
   
-  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-08-14T11:10:42.000Z" id="w3c-first-public-working-draft-14-august-2014"><abbr title="World Wide Web Consortium">W3C</abbr> First Public Working Draft <time class="dt-published" datetime="2014-08-14">14 August 2014</time></h2>
+  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-08-14T13:29:42.000Z" id="w3c-first-public-working-draft-14-august-2014"><abbr title="World Wide Web Consortium">W3C</abbr> First Public Working Draft <time class="dt-published" datetime="2014-08-14">14 August 2014</time></h2>
   <dl>
     
       <dt>This version:</dt>
@@ -692,7 +692,7 @@
           <li>no element <em>E1</em> explicitly references, e.g. using <code>xml:id</code>, another element <em>E2</em> where the opening tag of <em>E2</em> occurs after the opening tag of <em>E1</em>.</li>
         </ol>
 
-        <p>The <code>ittp:progressivelyDecodable</code> attribute shall conform to the following syntax:</p>
+        <p>If present, the <code>ittp:progressivelyDecodable</code> attribute <em class="rfc2119" title="SHALL">SHALL</em> conform to the following syntax:</p>
 
         <table class="syntax">
           <tbody>
@@ -708,9 +708,11 @@
             </tr>
           </tbody>
         </table>
-
-		<p>A <code>ittp:progressivelyDecodable</code> attribute is considered to be significant only when specified on the
+		
+		<p>An <code>ittp:progressivelyDecodable</code> attribute is considered to be significant only when specified on the
         <code>tt</code> element.</p>
+		
+		<p>If not specified, the value of <code>ittp:progressivelyDecodable</code> <em class="rfc2119" title="SHALL">SHALL</em> be considered to be equal to "false".</p>
 
         <p>A subtitle document for which the computed value of <code>ittp:progressivelyDecodable</code> is "true" <em class="rfc2119" title="SHALL">SHALL</em> be a
         progressively decodable subtitle document.</p>

--- a/ttml-ww-profiles/ttml-ww-profiles.source.html	Thu Aug 14 15:12:45 2014 +0200
+++ b/ttml-ww-profiles/ttml-ww-profiles.source.html	Thu Aug 14 17:31:05 2014 +0200
@@ -393,7 +393,7 @@
           <li>no element <em>E1</em> explicitly references, e.g. using <code>xml:id</code>, another element <em>E2</em> where the opening tag of <em>E2</em> occurs after the opening tag of <em>E1</em>.</li>
         </ol>
 
-        <p>The <code>ittp:progressivelyDecodable</code> attribute shall conform to the following syntax:</p>
+        <p>If present, the <code>ittp:progressivelyDecodable</code> attribute SHALL conform to the following syntax:</p>
 
         <table class="syntax">
           <tbody>
@@ -410,9 +410,11 @@
             </tr>
           </tbody>
         </table>
-
-		<p>A <code>ittp:progressivelyDecodable</code> attribute is considered to be significant only when specified on the
+		
+		<p>An <code>ittp:progressivelyDecodable</code> attribute is considered to be significant only when specified on the
         <code>tt</code> element.</p>
+		
+		<p>If not specified, the value of <code>ittp:progressivelyDecodable</code> SHALL be considered to be equal to "false".</p>
 
         <p>A subtitle document for which the computed value of <code>ittp:progressivelyDecodable</code> is "true" SHALL be a
         progressively decodable subtitle document.</p>