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Clarify derivation of special semantics of tts:direction (#1024). #1147

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Sep 19, 2019
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Clarify derivation of special semantics of tts:direction (#1024). #1147

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5 changes: 5 additions & 0 deletions spec/ttml2.xml
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Expand Up @@ -9678,6 +9678,11 @@ as determined above effectively becomes the value of <att>tts:direction</att> in
<p>In the case of any other element <emph><code>E</code></emph>, where <emph><code>E</code></emph> is not a
<loc href="#layout-vocabulary-region"><el>region</el></loc> element, the presence or absence of a <att>tts:writingMode</att> attribute
has no affect on the resolution of the computed value of <att>tts:direction</att> on <emph><code>E</code></emph>.</p>
<note role="clarification">
<p>The semantics described above correspond to the <emph>XSL modifications to the CSS definition</emph> of the
<code>direction</code> property as defined by <bibref ref="xslfo11"/> &sect;7.29.1, and, as such, are included in the scope of the
<loc href="#feature-direction"><code>#direction</code></loc> feature.</p>
</note>
</div4>
</div3>
<div3 id="style-attribute-disparity">
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