--- a/ttml2/spec/ttml2.html Sun Jan 25 13:58:02 2015 -0700
+++ b/ttml2/spec/ttml2.html Sun Jan 25 13:58:30 2015 -0700
@@ -83,9 +83,9 @@
.obsoleted { background-color: #f26d7d }
.reqattr { font-weight: bold }
.optattr { font-style: italic }
-</style><link rel="stylesheet" type="text/css" href="https://www.w3.org/StyleSheets/TR/W3C-ED.css"></head><body>Last Modified: $Date: 2015/01/18 17:38:57 $<div id="revisions"></div><div class="head">
+</style><link rel="stylesheet" type="text/css" href="https://www.w3.org/StyleSheets/TR/W3C-ED.css"></head><body>Last Modified: $Date: 2015/01/25 20:58:02 $<div id="revisions"></div><div class="head">
<h1><a id="title"></a>Timed Text Markup Language 2 (TTML2)</h1>
-<h2><a id="w3c-doctype"></a>Editors' copy $Date: 2015/01/18 17:38:57 $ @@ @@@@ @@@@</h2><dl><dt>This version:</dt><dd>
+<h2><a id="w3c-doctype"></a>Editors' copy $Date: 2015/01/25 20:58:02 $ @@ @@@@ @@@@</h2><dl><dt>This version:</dt><dd>
<a href="ttml2.html">ttml2.html</a>
</dd><dt>Latest version:</dt><dd><a href="https://dvcs.w3.org/hg/ttml/raw-file/default/ttml2/spec/ttml2.html?content-type=text/html;charset=utf-8">https://dvcs.w3.org/hg/ttml/raw-file/default/ttml2/spec/ttml2.html?content-type=text/html;charset=utf-8</a></dd><dt>Previous version:</dt><dd>
<a href="http://www.w3.org/TR/2013/REC-ttml1-20130924/">http://www.w3.org/TR/2013/REC-ttml1-20130924/</a>
@@ -5288,10 +5288,13 @@
ยง 7.16.9.</p></div></div><div class="div3">
<h4><a id="style-attribute-textCombine"></a>10.2.34 tts:textCombine</h4><p>When a vertical writing mode applies, the <code>tts:textCombine</code> attribute is used to specify a style property that
determines whether and how multiple nominally non-combining characters are combined so that their glyph areas
-consume the nominal bounding box of a single em square. If a horizontal writing mode applies, then this property is ignored
-for the purpose of presentation processing.</p><p>Combination processing may make use of one or more techniques to obtain the goal of visual combination into an em square. For
-example, half-width variant forms may be selected, a ligature may be selected, a smaller font size may be applied, etc. At a minimum, an
-implementation that supports this style property must be able to select half-width variant forms if available.</p><p>This attribute may be specified by any
+consume the nominal bounding box of a single em square of the surrounding vertical text.
+If a horizontal writing mode applies, then this property is ignored
+for the purpose of presentation processing.</p><p>Combination processing may make use of one or more techniques to obtain the goal of visual combination into an em square of the surrounding vertical text.
+For example, half-width variant forms may be selected, a ligature may be selected, a smaller font size may be applied, etc. At a minimum, an
+implementation that supports this style property must be able to select half-width variant forms if available. If none of these techniques are
+able to achieve the target dimension along the block progression dimension of the containing line area, then this dimension of the containing line area may be increased if
+permitted by the line stacking strategy in effect.</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 those element types indicated in the following table.</p><a id="style-property-details-textCombine"></a><table class="common"><col width="25%" span="1"><col span="1"><tbody><tr><td><em>Values:</em></td><td>