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[ttml2] add tts:{ruby,rubyAlign,rubyPosition} attributes (issue 228)
authorGlenn Adams <glenn@skynav.com>
Sat, 20 Sep 2014 19:54:14 -0600
changeset 705 6dcc85afb4f8
parent 704 efe3bcf18010
child 706 c0a8abc71bea
[ttml2] add tts:{ruby,rubyAlign,rubyPosition} attributes (issue 228)
ttml2/spec/images/ruby_1.png
ttml2/spec/images/ruby_2.png
ttml2/spec/rnc/schema.zip
ttml2/spec/rnc/ttml2-datatypes.rnc
ttml2/spec/rnc/ttml2-styling-attribs.rnc
ttml2/spec/ttml2-changes.html
ttml2/spec/ttml2.xml
ttml2/spec/xsd/schema.zip
ttml2/spec/xsd/ttml2-datatypes.xsd
ttml2/spec/xsd/ttml2-styling-attribs.xsd 
Binary file ttml2/spec/images/ruby_1.png has changed
Binary file ttml2/spec/images/ruby_2.png has changed
Binary file ttml2/spec/rnc/schema.zip has changed
--- a/ttml2/spec/rnc/ttml2-datatypes.rnc	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/rnc/ttml2-datatypes.rnc	Sat Sep 20 19:54:14 2014 -0600
@@ -215,6 +215,26 @@
   TTAF.MetadataRoleBaseType.datatype |
   xsd:NMTOKEN { pattern = "x-\c+" }
 
+TTAF.Ruby.datatype =
+  "none" |
+  "container" |
+  "base" |
+  "baseContainer" |
+  "text" |
+  "textContainer" |
+  "delimiter"
+
+TTAF.RubyAlign.datatype =
+  "start" |
+  "center" |
+  "spaceBetween" |
+  "spaceAround"
+
+TTAF.RubyPosition.datatype =
+  "before" |
+  "after" |
+  "interCharacter"
+
 TTAF.ShowBackground.datatype =
   "always" |
   "whenActive"
--- a/ttml2/spec/rnc/ttml2-styling-attribs.rnc	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/rnc/ttml2-styling-attribs.rnc	Sat Sep 20 19:54:14 2014 -0600
@@ -40,6 +40,12 @@
   = attribute tts:overflow { TTAF.Overflow.datatype }?
 TTAF.padding.attrib
   = attribute tts:padding { TTAF.Padding.datatype }?
+TTAF.ruby.attrib
+  = attribute tts:ruby { TTAF.Ruby.datatype }?
+TTAF.rubyAlign.attrib
+  = attribute tts:rubyAlign { TTAF.RubyAlign.datatype }?
+TTAF.rubyPosition.attrib
+  = attribute tts:rubyPosition { TTAF.RubyPosition.datatype }?
 TTAF.showBackground.attrib
   = attribute tts:showBackground { TTAF.ShowBackground.datatype }?
 TTAF.textAlign.attrib
@@ -85,6 +91,9 @@
   TTAF.origin.attrib,
   TTAF.overflow.attrib,
   TTAF.padding.attrib,
+  TTAF.ruby.attrib,
+  TTAF.rubyAlign.attrib,
+  TTAF.rubyPosition.attrib,
   TTAF.showBackground.attrib,
   TTAF.textAlign.attrib,
   TTAF.textDecoration.attrib,
--- a/ttml2/spec/ttml2-changes.html	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/ttml2-changes.html	Sat Sep 20 19:54:14 2014 -0600
@@ -157,6 +157,12 @@
 
 * In 8.2, add 'tts:border' styling attribute.
 
+* In 8.2, add 'tts:ruby styling attribute.
+
+* In 8.2, add 'tts:rubyAlign styling attribute.
+
+* In 8.2, add 'tts:rubyPosition styling attribute.
+
 * In 8.2, add 'tts:textOrientation' styling attribute.
 
 * In 8.2 prologue, add proscription against specifying non-applicable,,
--- a/ttml2/spec/ttml2.xml	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/ttml2.xml	Sat Sep 20 19:54:14 2014 -0600
@@ -2446,6 +2446,9 @@
 <loc href="#style-attribute-origin">tts:origin</loc>,
 <loc href="#style-attribute-overflow">tts:overflow</loc>,
 <loc href="#style-attribute-padding">tts:padding</loc>,
+<loc href="#style-attribute-ruby">tts:ruby</loc>,
+<loc href="#style-attribute-rubyAlign">tts:rubyAlign</loc>,
+<loc href="#style-attribute-rubyPosition">tts:rubyPosition</loc>,
 <loc href="#style-attribute-showBackground">tts:showBackground</loc>,
 <loc href="#style-attribute-textAlign">tts:textAlign</loc>,
 <loc href="#style-attribute-textDecoration">tts:textDecoration</loc>,
@@ -5044,6 +5047,9 @@
 <item><p><specref ref="style-attribute-origin"/></p></item>
 <item><p><specref ref="style-attribute-overflow"/></p></item>
 <item><p><specref ref="style-attribute-padding"/></p></item>
+<item><p><specref ref="style-attribute-ruby"/></p></item>
+<item><p><specref ref="style-attribute-rubyAlign"/></p></item>
+<item><p><specref ref="style-attribute-rubyPosition"/></p></item>
 <item><p><specref ref="style-attribute-showBackground"/></p></item>
 <item><p><specref ref="style-attribute-textAlign"/></p></item>
 <item><p><specref ref="style-attribute-textDecoration"/></p></item>
@@ -6894,6 +6900,349 @@
 &sect; 7.8.31, 7.8.32, 7.8.33, and 7.8.34.</p>
 </note>
 </div3>
+<div3 id="style-attribute-ruby">
+<head>tts:ruby</head>
+<p>The <att>tts:ruby</att> attribute is used to specify the application of ruby
+styling.</p>
+<p>This attribute applies only to <loc href="#content-vocabulary-span"><el>span</el></loc> elements and is not inheritable, so it should
+not be specified on any other element type. If specified elsewhere, then it must be ignored for
+the purpose of presentation processing.</p>
+<table id="style-property-details-ruby" role="common">
+<col width="25%"/>
+<col/>
+<tbody>
+<tr>
+<td><emph>Values:</emph></td>
+<td>
+<code>none</code> |
+<code>container</code> |
+<code>base</code> |
+<code>baseContainer</code> |
+<code>text</code> |
+<code>textContainer</code> |
+<code>delimiter</code>
+</td>
+</tr>
+<tr>
+<td><emph>Initial:</emph></td>
+<td><code>none</code></td>
+</tr>
+<tr>
+<td><emph>Applies to:</emph></td>
+<td>
+<loc href="#content-vocabulary-span"><el>span</el></loc>
+</td>
+</tr>
+<tr>
+<td><emph>Inherited:</emph></td>
+<td>no</td>
+</tr>
+<tr>
+<td><emph>Percentages:</emph></td>
+<td>N/A</td>
+</tr>
+<tr>
+<td><emph>Animatable:</emph></td>
+<td>discrete</td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<p>If the value of this attribute is <code>none</code>, then no ruby semantics apply; otherwise, the ruby semantics enumerated by
+<specref ref="ruby-semantics-mapping-table"/> apply, where the maximal content model defined by <bibref ref="ruby"/>, &sect;2.1, applies
+and must be treated as an error if violated.</p>
+<p>If a computed value of the property associated with this attribute is not supported,
+then a <loc href="#terms-presentation-processor">presentation processor</loc> must use the value <code>none</code>.</p>
+<table id="ruby-semantics-mapping-table" role="common">
+<caption>Table 8-1 &ndash; Ruby Semantics Mapping</caption>
+<col width="25%"/>
+<col width="25%"/>
+<col width="25%"/>
+<col width="25%"/>
+<col/>
+<tbody>
+<tr>
+<th>Category</th>
+<th>tts:ruby</th>
+<th>Annotation <bibref ref="ruby"/></th>
+<th>CSS display <bibref ref="cssruby"/></th>
+</tr>
+<tr>
+<td>Ruby Container</td>
+<td><code>container</code></td>
+<td><code>ruby</code></td>
+<td><code>ruby</code></td>
+</tr>
+<tr>
+<td>Ruby Base Content</td>
+<td><code>base</code></td>
+<td><code>rb</code></td>
+<td><code>ruby-base</code></td>
+</tr>
+<tr>
+<td>Ruby Text Content</td>
+<td><code>text</code></td>
+<td><code>rt</code></td>
+<td><code>ruby-text</code></td>
+</tr>
+<tr>
+<td>Ruby Base Container</td>
+<td><code>baseContainer</code></td>
+<td><code>rbc</code></td>
+<td><code>ruby-base-container</code></td>
+</tr>
+<tr>
+<td>Ruby Text Container</td>
+<td><code>textContainer</code></td>
+<td><code>rtc</code></td>
+<td><code>ruby-text-container</code></td>
+</tr>
+<tr>
+<td>Ruby Fallback Delimiter</td>
+<td><code>delimiter</code></td>
+<td><code>rp</code></td>
+<td><code>none</code></td>
+</tr>
+</tbody>
+</table>
+<p>Use of <att>tts:ruby</att> to specify simple ruby annotation is illustrated by the following example.</p>
+<table id="style-attribute-ruby-example-1" role="example">
+<caption>Example Fragment &ndash; Simple Ruby</caption>
+<tbody>
+<tr>
+<td>
+<eg xml:space="preserve">
+&lt;span <phrase role="strong">tts:ruby="container"</phrase>&gt;
+  &lt;span <phrase role="strong">tts:ruby="base"</phrase>&gt;&#x5229;&#x7528;&#x8A31;&#x8AFE;&lt;/span&gt;
+  &lt;span <phrase role="strong">tts:ruby="text"</phrase>&gt;&#x30E9;&#x30A4;&#x30BB;&#x30F3;&#x30B9;&lt;/span&gt;
+&lt;/span&gt;
+</eg>
+</td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<table id="style-attribute-ruby-example-1-images" role="example-images">
+<caption>Example Rendition &ndash; Simple Ruby</caption>
+<tbody>
+<tr>
+<td><graphic source="images/ruby_1.png" alt="TTML ruby style property"/></td>
+</tr>
+</tbody>
+</table>
+<p>Use of <att>tts:ruby</att> to specify complex ruby annotation is illustrated by the following example.</p>
+<table id="style-attribute-ruby-example-2" role="example">
+<caption>Example Fragment &ndash; Complex Ruby</caption>
+<tbody>
+<tr>
+<td>
+<eg xml:space="preserve">
+&lt;span&gt;
+  &lt;span <phrase role="strong">tts:ruby="container"</phrase>&gt;
+    &lt;span <phrase role="strong">tts:ruby="baseContainer"</phrase>&gt;
+      &lt;span <phrase role="strong">tts:ruby="base"</phrase>&gt;&#x6771;&#x5357;&lt;/span&gt;
+    &lt;/span&gt;
+    &lt;span <phrase role="strong">tts:ruby="textContainer"</phrase> tts:rubyPosition="before"&gt;
+      &lt;span <phrase role="strong">tts:ruby="text"</phrase>&gt;&#x3068;&#x3046;&#x306A;&#x3093;&lt;/span&gt;
+    &lt;/span&gt;
+    &lt;span <phrase role="strong">tts:ruby="textContainer"</phrase> tts:rubyPosition="after"&gt;
+      &lt;span <phrase role="strong">tts:ruby="text"</phrase>&gt;&#x305F;&#x3064;&#x307F;&lt;/span&gt;
+    &lt;/span&gt;
+  &lt;/span&gt;
+  &lt;span&gt;&#x306E;&#x65B9;&#x89D2;&lt;/span&gt;
+&lt;/span&gt;
+</eg>
+</td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<table id="style-attribute-ruby-example-2-images" role="example-images">
+<caption>Example Rendition &ndash; Complex Ruby</caption>
+<tbody>
+<tr>
+<td><graphic source="images/ruby_2.png" alt="TTML ruby style property"/></td>
+</tr>
+</tbody>
+</table>
+<note role="derivation">
+<p>The semantics of the style property
+represented by this attribute are based upon that defined by <bibref ref="ruby"/> and <bibref ref="cssruby"/>. See also
+<bibref ref="jlreq"/>, &sect;3.3, for further information.</p>
+</note>
+</div3>
+<div3 id="style-attribute-rubyAlign">
+<head>tts:rubyAlign</head>
+<p>The <att>tts:rubyAlign</att> attribute is used to specify the position of ruby text within the inline area generated by the ruby text container annotation.</p>
+<p>This attribute may be specified by any element type that permits use of attributes in the TT Style Namespace; however, this attribute applies
+as a style property only to <loc href="#content-vocabulary-span"><el>span</el></loc> elements on which the computed value of the
+<att>tts:ruby</att> style property is either <code>textContainer</code> or <code>text</code>.</p>
+<table id="style-property-details-rubyAlign" role="common">
+<col width="25%"/>
+<col/>
+<tbody>
+<tr>
+<td><emph>Values:</emph></td>
+<td>
+<code>start</code> |
+<code>center</code> |
+<code>spaceBetween</code> |
+<code>spaceAround</code>
+</td>
+</tr>
+<tr>
+<td><emph>Initial:</emph></td>
+<td><code>spaceAround</code></td>
+</tr>
+<tr>
+<td><emph>Applies to:</emph></td>
+<td>
+<emph>see prose (above)</emph>
+</td>
+</tr>
+<tr>
+<td><emph>Inherited:</emph></td>
+<td>yes</td>
+</tr>
+<tr>
+<td><emph>Percentages:</emph></td>
+<td>N/A</td>
+</tr>
+<tr>
+<td><emph>Animatable:</emph></td>
+<td>discrete</td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<p>If the value of this attribute is <code>start</code>, then the start edge of the first glyph area descendant of an inline area generated from a ruby text container
+or ruby text annotation is aligned to the start edge of that inline area.
+If the value is <code>center</code>, then excess whitespace
+is equally distributed before and after the first and last glyphs, respectively.
+If the value is <code>spaceBetween</code>, then excess whitespace
+is equally distributed between each glyph area descendant.
+If the value is <code>spaceAround</code>, then excess whitespace
+is equally distributed before and after each glyph area descendant.</p>
+<p>If a computed value of the property associated with this attribute is not supported,
+then a <loc href="#terms-presentation-processor">presentation processor</loc> must use the value <code>spaceAround</code>.</p>
+<ednote>
+<name>Ruby Align Example</name>
+<date>2014-09-20</date>
+<edtext>Add example and example rendering of tts:rubyAlign.</edtext>
+</ednote>
+<note role="derivation">
+<p>The semantics of the style property
+represented by this attribute are based upon that defined by <bibref ref="cssruby"/>, &sect;4.3, and the examples and example
+renderings shown there apply.</p>
+</note>
+</div3>
+<div3 id="style-attribute-rubyPosition">
+<head>tts:rubyPosition</head>
+<p>The <att>tts:rubyPosition</att> attribute is used to specify the position of ruby text in the block progression dimension
+with respect to its associated ruby base.</p>
+<p>This attribute may be specified by any element type that permits use of attributes in the TT Style Namespace; however, this attribute applies
+as a style property only to <loc href="#content-vocabulary-span"><el>span</el></loc> elements on which the computed value of the
+<att>tts:ruby</att> style property is either <code>textContainer</code> or <code>text</code>.</p>
+<table id="style-property-details-rubyPosition" role="common">
+<col width="25%"/>
+<col/>
+<tbody>
+<tr>
+<td><emph>Values:</emph></td>
+<td>
+<code>before</code> |
+<code>after</code> |
+<code>interCharacter</code>
+</td>
+</tr>
+<tr>
+<td><emph>Initial:</emph></td>
+<td><code>before</code></td>
+</tr>
+<tr>
+<td><emph>Applies to:</emph></td>
+<td>
+<emph>see prose (above)</emph>
+</td>
+</tr>
+<tr>
+<td><emph>Inherited:</emph></td>
+<td>yes</td>
+</tr>
+<tr>
+<td><emph>Percentages:</emph></td>
+<td>N/A</td>
+</tr>
+<tr>
+<td><emph>Animatable:</emph></td>
+<td>discrete</td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<p>If the value of this attribute is <code>before</code>, then an inline area generated from a ruby text container or ruby text annotation
+is placed before (prior to) the first edge in the block progression dimension of the inline area generated from an associated ruby base container or ruby base annotation.
+If the value is <code>after</code>, then an inline area generated from a ruby text container or ruby text annotation
+is placed after (subsequent to) the second edge in the block progression dimension of the inline area generated from an associated ruby base container or ruby base
+annotation.</p>
+<p>If the value of this attribute is <code>interCharacter</code>, then an inline area generated from a ruby text container or ruby text annotation is placed
+after the end edge in the inline progression dimension of the inline area generated from an associated ruby base container or ruby base annotation.</p>
+<p>The absolute position of the ruby text container or ruby text annotation is determined
+in accordance to the computed value of the <code>tts:writingMode</code> style property of the region into which the affected content is placed; in particular, the
+mappings defined enumerated by <specref ref="rubyPosition-semantics-mapping-table"/> apply as further defined by <bibref ref="cssruby"/>, &sect;4.1.</p>
+<p>If a computed value of the property associated with this attribute is not supported,
+then a <loc href="#terms-presentation-processor">presentation processor</loc> must use the value <code>before</code>.</p>
+<table id="rubyPosition-semantics-mapping-table" role="common">
+<caption>Table 8-2 &ndash; Ruby Position Semantics Mapping by Writing Mode</caption>
+<col width="20%"/>
+<col width="20%"/>
+<col width="20%"/>
+<col width="20%"/>
+<col width="20%"/>
+<col/>
+<tbody>
+<tr>
+<th>tts:rubyPosition</th>
+<th><code>lrtb</code></th>
+<th><code>rltb</code></th>
+<th><code>tbrl</code></th>
+<th><code>tblr</code></th>
+</tr>
+<tr>
+<td><code>before</code></td>
+<td><code>over</code></td>
+<td><code>over</code></td>
+<td><code>right</code></td>
+<td><code>left</code></td>
+</tr>
+<tr>
+<td><code>after</code></td>
+<td><code>under</code></td>
+<td><code>under</code></td>
+<td><code>left</code></td>
+<td><code>right</code></td>
+</tr>
+<tr>
+<td><code>interCharacter</code></td>
+<td><code>right</code></td>
+<td><code>left</code></td>
+<td><code>under</code></td>
+<td><code>under</code></td>
+</tr>
+</tbody>
+</table>
+<p></p>
+<ednote>
+<name>Ruby Position Example</name>
+<date>2014-09-20</date>
+<edtext>Add example and example rendering of tts:rubyPosition.</edtext>
+</ednote>
+<note role="derivation">
+<p>The semantics of the style property
+represented by this attribute are based upon that defined by <bibref ref="cssruby"/>, &sect;4.1, and the examples and example
+renderings shown there apply modulo the mappings defined above.</p>
+</note>
+</div3>
 <div3 id="style-attribute-showBackground">
 <head>tts:showBackground</head>
 <p>The <att>tts:showBackground</att> attribute is used to specify
@@ -9123,7 +9472,7 @@
 means of referential style association) always takes place in the
 context of a layout or <loc href="#terms-content-element">content element</loc> which has a presentation
 context, and not in the non-presentation, declaration context
-of an <el>animate</el>, <el>set</el>, or referentiable <el>style</el> element.</p>
+of an <el>animate</el>, <el>set</el>, or referable <el>style</el> element.</p>
 </note>
 </div4>
 <div4 id="semantics-style-resolution-process-overall">
@@ -14156,6 +14505,11 @@
 Module Level 3</titleref>, W3C Recommendation, 07 June 2011. (See
 <xspecref href="http://www.w3.org/TR/2011/REC-css3-color-20110607/">http://www.w3.org/TR/2011/REC-css3-color-20110607/</xspecref>.)
 </bibl>
+<bibl id="cssruby" key="CSS Ruby">Elika Etemad and Koji Ishii,
+<titleref href="http://dev.w3.org/csswg/css-ruby-1/">CSS Ruby Layout Module Level 1</titleref>
+W3C Editor's Draft.
+(See <xspecref href="http://dev.w3.org/csswg/css-ruby-1/">http://dev.w3.org/csswg/css-ruby-1//</xspecref>.)
+</bibl>
 <bibl id="gps" key="GPS">
 <titleref href="http://tycho.usno.navy.mil/gpsinfo.html">Global
 Positioning System</titleref>, US Naval Observatory.
@@ -14174,6 +14528,11 @@
 Schema Definition Language (DSDL) &ndash; Part 2: Regular-grammar-based validation &ndash; RELAX NG</titleref>,
 International Organization for Standardization (ISO).
 </bibl>
+<bibl id="ruby" key="Ruby">Masayasu Ishikawa et al.,
+<titleref href="http://www.w3.org/TR/2001/REC-ruby-20010531/">Ruby Annotation</titleref>
+W3C Recommendation, 31 May 2001.
+(See <xspecref href="http://www.w3.org/TR/2001/REC-ruby-20010531/">http://www.w3.org/TR/2001/REC-ruby-20010531/</xspecref>.)
+</bibl>
 <bibl id="smil3" key="SMIL 3.0">Dick Bultermann, et al.,
 <titleref href="http://www.w3.org/TR/2008/REC-SMIL3-20081201/">Synchronized
 Multimedia Integration Language (SMIL 3.0)</titleref>,
@@ -14312,6 +14671,11 @@
 <titleref href="http://dublincore.org/documents/dces/">Dublin Core Metadata Element Set, Version 1.1: Reference Description</titleref>. (See
 <xspecref href="http://dublincore.org/documents/dces/">http://dublincore.org/documents/dces/</xspecref>.)
 </bibl>
+<bibl id="jlreq" key="JLREQ">Richard Ishida et al.,
+<titleref href="http://www.w3.org/TR/2012/NOTE-jlreq-20120403/">Requirements for Japanese Text Layout</titleref>
+W3C Working Group Note, 3 April 2012.
+(See <xspecref href="http://www.w3.org/TR/2012/NOTE-jlreq-20120403/">http://www.w3.org/TR/2012/NOTE-jlreq-20120403/</xspecref>.)
+</bibl>
 <bibl id="mpeg7-5" key="MPEG7-5">
 ISO/IEC 15938-5,
 <titleref
Binary file ttml2/spec/xsd/schema.zip has changed
--- a/ttml2/spec/xsd/ttml2-datatypes.xsd	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/xsd/ttml2-datatypes.xsd	Sat Sep 20 19:54:14 2014 -0600
@@ -385,6 +385,32 @@
       </xs:simpleType>
     </xs:union>
   </xs:simpleType>
+  <xs:simpleType name="ruby">
+    <xs:restriction base="xs:token">
+      <xs:enumeration value="none"/>
+      <xs:enumeration value="container"/>
+      <xs:enumeration value="base"/>
+      <xs:enumeration value="baseContainer"/>
+      <xs:enumeration value="text"/>
+      <xs:enumeration value="textContainer"/>
+      <xs:enumeration value="delimiter"/>
+    </xs:restriction>
+  </xs:simpleType>
+  <xs:simpleType name="rubyAlign">
+    <xs:restriction base="xs:token">
+      <xs:enumeration value="start"/>
+      <xs:enumeration value="center"/>
+      <xs:enumeration value="spaceBetween"/>
+      <xs:enumeration value="spaceAround"/>
+    </xs:restriction>
+  </xs:simpleType>
+  <xs:simpleType name="rubyPosition">
+    <xs:restriction base="xs:token">
+      <xs:enumeration value="before"/>
+      <xs:enumeration value="after"/>
+      <xs:enumeration value="interCharacter"/>
+    </xs:restriction>
+  </xs:simpleType>
   <xs:simpleType name="showBackground">
     <xs:restriction base="xs:token">
       <xs:enumeration value="always"/>
--- a/ttml2/spec/xsd/ttml2-styling-attribs.xsd	Wed Sep 17 06:15:47 2014 +0200
+++ b/ttml2/spec/xsd/ttml2-styling-attribs.xsd	Sat Sep 20 19:54:14 2014 -0600
@@ -21,6 +21,9 @@
   <xs:attribute name="origin" type="ttd:origin"/>
   <xs:attribute name="overflow" type="ttd:overflow"/>
   <xs:attribute name="padding" type="ttd:padding"/>
+  <xs:attribute name="ruby" type="ttd:ruby"/>
+  <xs:attribute name="rubyAlign" type="ttd:rubyAlign"/>
+  <xs:attribute name="rubyPosition" type="ttd:rubyPosition"/>
   <xs:attribute name="showBackground" type="ttd:showBackground"/>
   <xs:attribute name="textAlign" type="ttd:textAlign"/>
   <xs:attribute name="textDecoration" type="ttd:textDecoration"/>
@@ -49,6 +52,9 @@
     <xs:attribute ref="tts:overflow"/>
     <xs:attribute ref="tts:padding"/>
     <xs:attribute ref="tts:showBackground"/>
+    <xs:attribute ref="tts:ruby"/>
+    <xs:attribute ref="tts:rubyAlign"/>
+    <xs:attribute ref="tts:rubyPosition"/>
     <xs:attribute ref="tts:textAlign"/>
     <xs:attribute ref="tts:textDecoration"/>
     <xs:attribute ref="tts:textOrientation"/>
ttml

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