--- a/ttml-ww-profiles/ttml-ww-profiles.html	Thu Jul 31 09:33:48 2014 -0600
+++ b/ttml-ww-profiles/ttml-ww-profiles.html	Thu Jul 31 09:34:49 2014 -0600
@@ -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="2014-07-31T11:39:41.000Z" id="w3c-first-public-working-draft-31-july-2014"><abbr title="World Wide Web Consortium">W3C</abbr> First Public Working Draft <time class="dt-published" datetime="2014-07-31">31 July 2014</time></h2>
+  <h2 property="dcterms:issued" datatype="xsd:dateTime" content="2014-07-31T13:24:29.000Z" id="w3c-first-public-working-draft-31-july-2014"><abbr title="World Wide Web Consortium">W3C</abbr> First Public Working Draft <time class="dt-published" datetime="2014-07-31">31 July 2014</time></h2>
   <dl>
     
       <dt>This version:</dt>
@@ -342,7 +342,7 @@
       
     
   
-</section><section id="toc"><h2 class="introductory" aria-level="1" role="heading" id="h2_toc">Table of Contents</h2><ul class="toc" role="directory" id="respecContents"><li class="tocline"><a href="#scope" class="tocxref"><span class="secno">1. </span>Scope</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">2. </span>Conformance</a></li><li class="tocline"><a href="#profiles" class="tocxref"><span class="secno">3. </span>Profiles</a><ul class="toc"><li class="tocline"><a href="#general" class="tocxref"><span class="secno">3.1 </span>General</a></li><li class="tocline"><a href="#text-profile" class="tocxref"><span class="secno">3.2 </span>Text Profile</a></li><li class="tocline"><a href="#image-profile" class="tocxref"><span class="secno">3.3 </span>Image Profile</a></li></ul></li><li class="tocline"><a href="#common-constraints" class="tocxref"><span class="secno">4. </span>Common Constraints</a><ul class="toc"><li class="tocline"><a href="#document-encoding" class="tocxref"><span class="secno">4.1 </span>Document Encoding</a></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">4.2 </span>Namespaces</a></li><li class="tocline"><a href="#related-video-object" class="tocxref"><span class="secno">4.3 </span>Related Video Object</a></li><li class="tocline"><a href="#synchronization" class="tocxref"><span class="secno">4.4 </span>Synchronization</a></li><li class="tocline"><a href="#extensions" class="tocxref"><span class="secno">4.5 </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#ttp-aspectRatio" class="tocxref"><span class="secno">4.5.1 </span>ittp:aspectRatio</a></li><li class="tocline"><a href="#ttp-progressivelyDecodable" class="tocxref"><span class="secno">4.5.2 </span>ittp:progressivelyDecodable</a></li><li class="tocline"><a href="#tts-forcedDisplay" class="tocxref"><span class="secno">4.5.3 </span>itts:forcedDisplay</a></li><li class="tocline"><a href="#ttm-altText" class="tocxref"><span class="secno">4.5.4 </span>ittm:altText</a></li></ul></li><li class="tocline"><a href="#region" class="tocxref"><span class="secno">4.6 </span>Region</a><ul class="toc"><li class="tocline"><a href="#presented-region" class="tocxref"><span class="secno">4.6.1 </span>Presented Region</a></li><li class="tocline"><a href="#dimensions-and-position" class="tocxref"><span class="secno">4.6.2 </span>Dimensions and Position</a></li><li class="tocline"><a href="#maximum-number" class="tocxref"><span class="secno">4.6.3 </span>Maximum number</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model-1" class="tocxref"><span class="secno">4.7 </span>Hypothetical Render Model</a></li><li class="tocline"><a href="#common-features" class="tocxref"><span class="secno">4.8 </span>Features</a></li></ul></li><li class="tocline"><a href="#text-profile-constraints" class="tocxref"><span class="secno">5. </span>Text Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#text-profile-designator" class="tocxref"><span class="secno">5.1 </span>Profile Designator</a></li><li class="tocline"><a href="#recommended-character-sets" class="tocxref"><span class="secno">5.2 </span>Recommended Character Sets</a></li><li class="tocline"><a href="#features" class="tocxref"><span class="secno">5.3 </span>Features</a></li></ul></li><li class="tocline"><a href="#image-profile-constraints" class="tocxref"><span class="secno">6. </span>Image Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#image-profile-designator" class="tocxref"><span class="secno">6.1 </span>Profile Designator</a></li><li class="tocline"><a href="#presented-image" class="tocxref"><span class="secno">6.2 </span>Presented Image</a><ul class="toc"><li class="tocline"><a href="#definition" class="tocxref"><span class="secno">6.2.1 </span>Definition</a></li><li class="tocline"><a href="#number-per-region" class="tocxref"><span class="secno">6.2.2 </span>Number per Region</a></li></ul></li><li class="tocline"><a href="#div-element" class="tocxref"><span class="secno">6.3 </span><code>div</code> element</a></li><li class="tocline"><a href="#features-1" class="tocxref"><span class="secno">6.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model" class="tocxref"><span class="secno">7. </span>Hypothetical Render Model</a><ul class="toc"><li class="tocline"><a href="#performance-model" class="tocxref"><span class="secno">7.1 </span>Performance Model</a><ul class="toc"><li class="tocline"><a href="#overview" class="tocxref"><span class="secno">7.1.1 </span>Overview</a></li><li class="tocline"><a href="#general-1" class="tocxref"><span class="secno">7.1.2 </span>General</a></li><li class="tocline"><a href="#paint-regions" class="tocxref"><span class="secno">7.1.3 </span>Paint Regions</a></li><li class="tocline"><a href="#paint-images" class="tocxref"><span class="secno">7.1.4 </span>Paint Images</a></li><li class="tocline"><a href="#paint-text" class="tocxref"><span class="secno">7.1.5 </span>Paint Text</a></li></ul></li><li class="tocline"><a href="#reference-fonts" class="tocxref"><span class="secno">7.2 </span>Reference Fonts</a></li></ul></li><li class="tocline"><a href="#recommended-unicode-code-points-per-language" class="tocxref"><span class="secno">A. </span>Recommended Character Sets</a></li><li class="tocline"><a href="#forced-content" class="tocxref"><span class="secno">B. </span>Forced content (informative)</a></li><li class="tocline"><a href="#wcag-applications" class="tocxref"><span class="secno">C. </span>WCAG Considerations</a></li><li class="tocline"><a href="#features-and-extensions" class="tocxref"><span class="secno">D. </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#general-2" class="tocxref"><span class="secno">D.1 </span>General</a></li><li class="tocline"><a href="#progressivelydecodable" class="tocxref"><span class="secno">D.2 </span>#progressivelyDecodable</a></li><li class="tocline"><a href="#aspectratio" class="tocxref"><span class="secno">D.3 </span>#aspectRatio</a></li><li class="tocline"><a href="#forceddisplay" class="tocxref"><span class="secno">D.4 </span>#forcedDisplay</a></li><li class="tocline"><a href="#alttext" class="tocxref"><span class="secno">D.5 </span>#altText</a></li></ul></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">E. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">E.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">E.2 </span>Informative references</a></li></ul></li></ul></section>
+</section><section id="toc"><h2 class="introductory" aria-level="1" role="heading" id="h2_toc">Table of Contents</h2><ul class="toc" role="directory" id="respecContents"><li class="tocline"><a href="#scope" class="tocxref"><span class="secno">1. </span>Scope</a></li><li class="tocline"><a href="#conformance" class="tocxref"><span class="secno">2. </span>Conformance</a></li><li class="tocline"><a href="#profiles" class="tocxref"><span class="secno">3. </span>Profiles</a><ul class="toc"><li class="tocline"><a href="#general" class="tocxref"><span class="secno">3.1 </span>General</a></li><li class="tocline"><a href="#text-profile" class="tocxref"><span class="secno">3.2 </span>Text Profile</a></li><li class="tocline"><a href="#image-profile" class="tocxref"><span class="secno">3.3 </span>Image Profile</a></li></ul></li><li class="tocline"><a href="#common-constraints" class="tocxref"><span class="secno">4. </span>Common Constraints</a><ul class="toc"><li class="tocline"><a href="#document-encoding" class="tocxref"><span class="secno">4.1 </span>Document Encoding</a></li><li class="tocline"><a href="#namespaces" class="tocxref"><span class="secno">4.2 </span>Namespaces</a></li><li class="tocline"><a href="#related-video-object" class="tocxref"><span class="secno">4.3 </span>Related Video Object</a></li><li class="tocline"><a href="#synchronization" class="tocxref"><span class="secno">4.4 </span>Synchronization</a></li><li class="tocline"><a href="#extensions" class="tocxref"><span class="secno">4.5 </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#ttp-aspectRatio" class="tocxref"><span class="secno">4.5.1 </span>ittp:aspectRatio</a></li><li class="tocline"><a href="#ttp-progressivelyDecodable" class="tocxref"><span class="secno">4.5.2 </span>ittp:progressivelyDecodable</a></li><li class="tocline"><a href="#tts-forcedDisplay" class="tocxref"><span class="secno">4.5.3 </span>itts:forcedDisplay</a></li><li class="tocline"><a href="#ttm-altText" class="tocxref"><span class="secno">4.5.4 </span>ittm:altText</a></li></ul></li><li class="tocline"><a href="#region" class="tocxref"><span class="secno">4.6 </span>Region</a><ul class="toc"><li class="tocline"><a href="#presented-region" class="tocxref"><span class="secno">4.6.1 </span>Presented Region</a></li><li class="tocline"><a href="#dimensions-and-position" class="tocxref"><span class="secno">4.6.2 </span>Dimensions and Position</a></li><li class="tocline"><a href="#maximum-number" class="tocxref"><span class="secno">4.6.3 </span>Maximum number</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model-1" class="tocxref"><span class="secno">4.7 </span>Hypothetical Render Model</a></li><li class="tocline"><a href="#common-features" class="tocxref"><span class="secno">4.8 </span>Features</a></li></ul></li><li class="tocline"><a href="#text-profile-constraints" class="tocxref"><span class="secno">5. </span>Text Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#text-profile-designator" class="tocxref"><span class="secno">5.1 </span>Profile Designator</a></li><li class="tocline"><a href="#recommended-character-sets" class="tocxref"><span class="secno">5.2 </span>Recommended Character Sets</a></li><li class="tocline"><a href="#features" class="tocxref"><span class="secno">5.3 </span>Features</a></li></ul></li><li class="tocline"><a href="#image-profile-constraints" class="tocxref"><span class="secno">6. </span>Image Profile Constraints</a><ul class="toc"><li class="tocline"><a href="#image-profile-designator" class="tocxref"><span class="secno">6.1 </span>Profile Designator</a></li><li class="tocline"><a href="#presented-image" class="tocxref"><span class="secno">6.2 </span>Presented Image</a><ul class="toc"><li class="tocline"><a href="#definition" class="tocxref"><span class="secno">6.2.1 </span>Definition</a></li><li class="tocline"><a href="#number-per-region" class="tocxref"><span class="secno">6.2.2 </span>Number per Region</a></li></ul></li><li class="tocline"><a href="#div-element" class="tocxref"><span class="secno">6.3 </span><code>div</code> element</a></li><li class="tocline"><a href="#features-1" class="tocxref"><span class="secno">6.4 </span>Features</a></li></ul></li><li class="tocline"><a href="#hypothetical-render-model" class="tocxref"><span class="secno">7. </span>Hypothetical Render Model</a><ul class="toc"><li class="tocline"><a href="#performance-model" class="tocxref"><span class="secno">7.1 </span>Performance Model</a><ul class="toc"><li class="tocline"><a href="#overview" class="tocxref"><span class="secno">7.1.1 </span>Overview</a></li><li class="tocline"><a href="#general-1" class="tocxref"><span class="secno">7.1.2 </span>General</a></li><li class="tocline"><a href="#paint-regions" class="tocxref"><span class="secno">7.1.3 </span>Paint Regions</a></li><li class="tocline"><a href="#paint-images" class="tocxref"><span class="secno">7.1.4 </span>Paint Images</a></li><li class="tocline"><a href="#paint-text" class="tocxref"><span class="secno">7.1.5 </span>Paint Text</a></li></ul></li><li class="tocline"><a href="#reference-fonts" class="tocxref"><span class="secno">7.2 </span>Reference Fonts</a></li></ul></li><li class="tocline"><a href="#recommended-unicode-code-points-per-language" class="tocxref"><span class="secno">A. </span>Recommended Character Sets</a></li><li class="tocline"><a href="#forced-content" class="tocxref"><span class="secno">B. </span>Forced content (non-normative)</a></li><li class="tocline"><a href="#wcag-applications" class="tocxref"><span class="secno">C. </span>WCAG Considerations</a></li><li class="tocline"><a href="#features-and-extensions" class="tocxref"><span class="secno">D. </span>Extensions</a><ul class="toc"><li class="tocline"><a href="#general-2" class="tocxref"><span class="secno">D.1 </span>General</a></li><li class="tocline"><a href="#progressivelydecodable" class="tocxref"><span class="secno">D.2 </span>#progressivelyDecodable</a></li><li class="tocline"><a href="#aspectratio" class="tocxref"><span class="secno">D.3 </span>#aspectRatio</a></li><li class="tocline"><a href="#forceddisplay" class="tocxref"><span class="secno">D.4 </span>#forcedDisplay</a></li><li class="tocline"><a href="#alttext" class="tocxref"><span class="secno">D.5 </span>#altText</a></li></ul></li><li class="tocline"><a href="#references" class="tocxref"><span class="secno">E. </span>References</a><ul class="toc"><li class="tocline"><a href="#normative-references" class="tocxref"><span class="secno">E.1 </span>Normative references</a></li><li class="tocline"><a href="#informative-references" class="tocxref"><span class="secno">E.2 </span>Informative references</a></li></ul></li></ul></section>
 
   
 
@@ -700,7 +700,7 @@
       <section id="tts-forcedDisplay" typeof="bibo:Chapter" resource="#tts-forcedDisplay" rel="bibo:Chapter">
         <h4 aria-level="3" role="heading" id="h4_tts-forcedDisplay"><span class="secno">4.5.3 </span>itts:forcedDisplay</h4>
 
-        <p><code>itts:forcedDisplay</code> allows the processor to override the computed value of <code>itts:forcedDisplay</code>
+        <p><code>itts:forcedDisplay</code> allows the processor to override the computed value of <code>tts:visibility</code>
         attribute in conjunction with an application parameter <code>displayForcedOnlyMode</code>.</p>
 
         <p>If the value of <code>displayForcedOnlyMode</code> is "true", a content element with a
@@ -753,7 +753,7 @@
           </tbody>
         </table>
 
-        <p>Annex <a href="#forced-content" class="sec-ref"><span class="secno">B.</span> <span class="sec-title">Forced content (informative)</span></a> illustrates the use of <code>itts:forcedDisplay</code> in an application in which a
+        <p>Annex <a href="#forced-content" class="sec-ref"><span class="secno">B.</span> <span class="sec-title">Forced content (non-normative)</span></a> illustrates the use of <code>itts:forcedDisplay</code> in an application in which a
         single document contains both hard of hearing captions and translated foreign language subtitles, using
         <code>itts:forcedDisplay</code> to display translation subtitles always, independently of whether the hard of hearing
         captions are displayed or hidden.</p>
@@ -765,16 +765,12 @@
         <p>The algorithm for setting the <code>displayForcedOnlyMode</code> parameter based on the circumstances under which the
         subtitle document is presented is left to the application.</p>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_6"><span>Note</span></div><p class="">A region will remain visible even if all content elements have a computed <code>tts:display</code> value of
-        "none" unless <code>tts:showBackground</code> is set to "whenActive" (the initial value of
-        <code>tts:showBackground</code> is "always".)</p></div>
-
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_7"><span>Note</span></div><p class="">Although <code>itts:forcedDisplay</code>, like all the TTML style attributes, has no defined semantics on a
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_6"><span>Note</span></div><p class="">Although <code>itts:forcedDisplay</code>, like all the TTML style attributes, has no defined semantics on a
         <code>br</code> content element, <code>itts:forcedDisplay</code> will apply to a <code>br</code> content element if it is
         either defined on an ancestor content element of the <code>br</code> content element or it is applied to a region element
         corresponding to a region that the <code>br</code> content element is being flowed into.</p></div>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_8"><span>Note</span></div><p class="">It is expected that the functionality of <code>itts:forcedDisplay</code> will be mapped to a conditional
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_7"><span>Note</span></div><p class="">It is expected that the functionality of <code>itts:forcedDisplay</code> will be mapped to a conditional
         style construct in a future revision of this specification.</p></div>
       </section>
 
@@ -808,7 +804,7 @@
 
         <p><a href="#image-profile-constraints" class="sec-ref"><span class="secno">6.</span> <span class="sec-title">Image Profile Constraints</span></a> specifies the use of the <code>ittm:altText</code> element with images.</p>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_9"><span>Note</span></div><p class="">In contrast to the common use of <code>alt</code> attributes in [<cite><a class="bibref" href="#bib-HTML5">HTML5</a></cite>], the <code>ittm:altText</code>
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_8"><span>Note</span></div><p class="">In contrast to the common use of <code>alt</code> attributes in [<cite><a class="bibref" href="#bib-HTML5">HTML5</a></cite>], the <code>ittm:altText</code>
         attribute content is not intended to be displayed in place of the element if the element is not loaded. The
         <code>ittm:altText</code> attribute content can however be read and used by assistive technologies. .</p></div>
       </section>
@@ -837,7 +833,7 @@
           </li>
         </ol>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_10"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], the initial value of <code>tts:opacity</code> is "1.0", the initial
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_9"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], the initial value of <code>tts:opacity</code> is "1.0", the initial
         value of <code>tts:showBackground</code> is "always", and the initial value of <code>tts:display</code> is
         "auto"</p></div>
       </section>
@@ -1309,7 +1305,7 @@
         </tbody>
       </table>
 
-      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_11"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], a <code>#time-offset-with-frames</code> expression is translated to a media time
+      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_10"><span>Note</span></div><p class="">As specified in [<cite><a class="bibref" href="#bib-TTML1">TTML1</a></cite>], a <code>#time-offset-with-frames</code> expression is translated to a media time
       M according to M = 3600 · hours + 60 · minutes + seconds + (frames ÷ (<code>ttp:frameRateMultiplier</code> ·
       <code>ttp:frameRate</code>)).</p></div>
     </section>
@@ -1976,7 +1972,7 @@
         P<sub>n-1</sub> at the presentation time of intermediate synchronic document E<sub>n</sub>, making the latter available for
         display.</p>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_12"><span>Note</span></div><p class="">It is possible for the contents of Presentation Buffer P<sub>n-1</sub> to never be displayed. This can
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_11"><span>Note</span></div><p class="">It is possible for the contents of Presentation Buffer P<sub>n-1</sub> to never be displayed. This can
         happen if Presentation Buffer P<sub>n</sub> is copied twice to Presentation Buffer P<sub>n-1</sub> between two consecutive
         video frame boundaries of the related video object.</p></div>
 
@@ -2009,11 +2005,11 @@
           </tbody>
         </table>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_13"><span>Note</span></div><p class="">BDraw effectively sets a limit on fillings regions - for example, assuming that the root container is
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_12"><span>Note</span></div><p class="">BDraw effectively sets a limit on fillings regions - for example, assuming that the root container is
         ultimately rendered at 1920×1080 resolution, a BDraw of 12 s<sup>-1</sup> would correspond to a fill rate of
         1920×1080×12/s=23.7×2<sup>20</sup>pixels s<sup>-1</sup>.</p></div>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_14"><span>Note</span></div><p class="">IPD effectively sets a limit on the complexity of any given intermediate synchronic document.</p></div>
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_13"><span>Note</span></div><p class="">IPD effectively sets a limit on the complexity of any given intermediate synchronic document.</p></div>
       </section>
 
       <section id="paint-regions" typeof="bibo:Chapter" resource="#paint-regions" rel="bibo:Chapter">
@@ -2025,7 +2021,7 @@
 
         <p>where CLEAR(E<sub>0</sub>) = 0 and CLEAR(E<sub>n | n &gt; 0</sub>) = 1, i.e. the root container in its entirety.</p>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_15"><span>Note</span></div><p class="">To ensure consistency of the Presentation Buffer, a new intermediate synchronic document requires clearing
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_14"><span>Note</span></div><p class="">To ensure consistency of the Presentation Buffer, a new intermediate synchronic document requires clearing
         of the root container.</p></div>
 
         <p>PAINT(E<sub>n</sub>) <em class="rfc2119" title="SHALL">SHALL</em> be the normalized area to be painted for all regions that are used in intermediate synchronic
@@ -2276,7 +2272,7 @@
           </tbody>
         </table>
 
-        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_16"><span>Note</span></div><p class="">NRGA(G<sub>i</sub>) does not take into account glyph decorations (e.g. underline), glyph effects (e.g.
+        <div class="note"><div class="note-title" aria-level="4" role="heading" id="h_note_15"><span>Note</span></div><p class="">NRGA(G<sub>i</sub>) does not take into account glyph decorations (e.g. underline), glyph effects (e.g.
         outline) or actual glyph aspect ratio. An implementation can determine an actual buffer size needs based on worst-case
         glyph size complexity.</p></div>
 
@@ -2357,10 +2353,10 @@
         </tbody>
       </table>
 
-      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_17"><span>Note</span></div><p class="">Implementations can use use fonts other than those specified above. Two fonts with equal metrics can have a
+      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_16"><span>Note</span></div><p class="">Implementations can use use fonts other than those specified above. Two fonts with equal metrics can have a
       different appearance, but flow identically.</p></div>
 
-      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_18"><span>Note</span></div><p class="">proportionalSansSerif is not used in practice for Hebrew and Arabic captions and subtitles.</p></div>
+      <div class="note"><div class="note-title" aria-level="3" role="heading" id="h_note_17"><span>Note</span></div><p class="">proportionalSansSerif is not used in practice for Hebrew and Arabic captions and subtitles.</p></div>
     </section>
   </section>
 
@@ -2703,7 +2699,7 @@
   </section>
 
   <section class="appendix" id="forced-content" typeof="bibo:Chapter" resource="#forced-content" rel="bibo:Chapter">
-    <!--OddPage--><h2 aria-level="1" role="heading" id="h2_forced-content"><span class="secno">B. </span>Forced content (informative)</h2>
+    <!--OddPage--><h2 aria-level="1" role="heading" id="h2_forced-content"><span class="secno">B. </span>Forced content (non-normative)</h2>
 
     <p><a href="#fig-forced-content" class="fig-ref">Fig. <span class="figno">3</span> <span class="fig-title">
         Illustration of the use of itts:forcedDisplay

--- a/ttml-ww-profiles/ttml-ww-profiles.source.html	Thu Jul 31 09:33:48 2014 -0600
+++ b/ttml-ww-profiles/ttml-ww-profiles.source.html	Thu Jul 31 09:34:49 2014 -0600
@@ -406,7 +406,7 @@
       <section id='tts-forcedDisplay'>
         <h4>itts:forcedDisplay</h4>
 
-        <p><code>itts:forcedDisplay</code> allows the processor to override the computed value of <code>itts:forcedDisplay</code>
+        <p><code>itts:forcedDisplay</code> allows the processor to override the computed value of <code>tts:visibility</code>
         attribute in conjunction with an application parameter <code>displayForcedOnlyMode</code>.</p>
 
         <p>If the value of <code>displayForcedOnlyMode</code> is &quot;true&quot;, a content element with a
@@ -471,10 +471,6 @@
         <p>The algorithm for setting the <code>displayForcedOnlyMode</code> parameter based on the circumstances under which the
         subtitle document is presented is left to the application.</p>
 
-        <p class='note'>A region will remain visible even if all content elements have a computed <code>tts:display</code> value of
-        &quot;none&quot; unless <code>tts:showBackground</code> is set to &quot;whenActive&quot; (the initial value of
-        <code>tts:showBackground</code> is &quot;always&quot;.)</p>
-
         <p class='note'>Although <code>itts:forcedDisplay</code>, like all the TTML style attributes, has no defined semantics on a
         <code>br</code> content element, <code>itts:forcedDisplay</code> will apply to a <code>br</code> content element if it is
         either defined on an ancestor content element of the <code>br</code> content element or it is applied to a region element
@@ -2413,7 +2409,7 @@
   </section>
 
   <section class='appendix' id='forced-content'>
-    <h2>Forced content (informative)</h2>
+    <h2>Forced content (non-normative)</h2>
 
     <p><a href='#fig-forced-content'></a> below illustrates the use of forced content, i.e. <code>itts:forcedDisplay</code> and
     <code>displayForcedOnlyMode</code>. The content with <code>itts:forcedDisplay</code>=&quot;true&quot; is the French translation