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<set> elements no longer pruned by ISD #276

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Dec 18, 2017
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12 changes: 8 additions & 4 deletions spec/ttml1.xml
Original file line number Diff line number Diff line change
Expand Up @@ -7436,10 +7436,14 @@ sub-tree
headed by the <el>body</el> element;</p>
</item>
<item>
<p>evaluating this sub-tree in a postorder traversal, prune elements if they
are not a <loc href="#element-vocab-type-content">Content</loc> element, if they are temporally inactive, if they are empty,
or if they aren't associated with region <emph>R</emph> according to the
<phrase role="strong">[associate region]</phrase> procedure;</p>
<p>evaluating this sub-tree in a postorder traversal, prune elements if any of the following conditions is true:
<olist>
<item><p>they are neither <loc href="#element-vocab-type-content">Content</loc> nor <loc href="#element-vocab-type-animation">Animation</loc> elements; or</p></item>
<item><p>they are temporally inactive; or</p></item>
<item><p>they are <loc href="#element-vocab-type-content">Content</loc> elements and empty; or</p></item>
<item><p>they are <loc href="#element-vocab-type-content">Content</loc> elements and aren't associated with region <emph>R</emph> according to the <phrase role="strong">[associate region]</phrase> procedure.</p></item>
</olist>
</p>
</item>
<item>
<p>if the pruned sub-tree is non-empty, then reparent it to the <emph>R</emph>
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