--- a/ttml2/spec/ttml2.xml Mon Jan 05 11:38:22 2015 -0700
+++ b/ttml2/spec/ttml2.xml Mon Jan 05 11:56:45 2015 -0700
@@ -8919,7 +8919,7 @@
<note role="derivation">
<p>The semantics of the style property
represented by this attribute are based upon that defined by <bibref ref="xsl11"/>,
-§ 7.15.14, and <bibref ref="css3-box"/>, § 9</p>
+§ 7.15.6, and <bibref ref="css3-box"/>, § 9</p>
</note>
</div3>
<div3 id="style-attribute-letterSpacing">
@@ -11864,7 +11864,7 @@
<div3 id="style-value-measure">
<head><measure></head>
-<p>A <measure> value expression is used to express a distance used to measure an allocation
+<p>A <measure> value expresses a distance used to measure an allocation
dimension in either the inline progression direction or the block progression direction, where
the direction that applies is determined by the context of use.</p>
<note role="clarification">
@@ -11904,10 +11904,11 @@
<gitem>
<label><code>available</code></label>
<def>
-<p>For width in a horizontal writing mode, the numeric value equal to the width of the parent containing block's height less
-the current element's combined border and padding width.</p>
-<p>For height in a horizontal writing mode, the numeric value equal to the height of the parent containing block's height less
+<p>For width in a horizontal writing mode, the numeric value equal to the width of the parent containing block's width less
+the current element's combined border and padding width.
+For height in a horizontal writing mode, the numeric value equal to the height of the parent containing block's height less
the current element's combined border and padding height.</p>
+<p>For vertical writing mode, the sense of width and height is reversed.</p>
</def>
</gitem>
<gitem>