--- a/ttml10/spec/ttaf1-dfxp.xml	Fri Jun 28 00:36:35 2013 -0600
+++ b/ttml10/spec/ttaf1-dfxp.xml	Wed Jul 03 07:54:18 2013 -0600
@@ -373,6 +373,14 @@
 <emph>X</emph> or <emph>Y</emph>.
 </p>
 </note>
+<note role="explanation">
+<p>In this example, the <el>p</el> element is used as a presentational
+element rather than as a semantic element, i.e., as a linguistic paragraph.
+It is up to an author to determine which TTML elements are used to convey
+the intended meaning. For instance, this example could be written to use
+timing on <el>span</el> elements in order to preserve the integrity of
+semantic paragraphs.</p>
+</note>
 <table id="ttml-example-subtitle-1" role="example-images">
 <caption>Subtitle 1 &ndash; Time Interval [0.76, 3.45)</caption>
 <tbody>
@@ -950,7 +958,7 @@
 <p>The processor does not <emph>a priori</emph> reject or abort the
 processing of a conformant <emph>Document Instance</emph>
 unless the processor does not support some required
-(mandatory) feature specified or implied by a TTML Content profile
+(mandatory) feature specified or implied by a TTML profile
 declared to apply to the <emph>Document Instance</emph>.</p>
 </item>
 <item>
@@ -1307,7 +1315,7 @@
 that profile. This attribute may also be used by an author to indicate the use
 of a non-standard profile, in which case the specified profile designator expresses
 a URI that denotes an externally defined <emph>Profile Definition Document</emph>.
-However, it is not required that a conformant TTML Content processor be able
+However, it is not required that a conformant TTML Content Processor be able
 to dereference such an externally specified profile definition.</p>
 <p>In contrast, it is intended that the <el>ttp:profile</el> element be
 used when the author wishes to make use of a modified predefined profile or
@@ -1766,7 +1774,7 @@
 expected to be) used by the <emph>Document Instance</emph>.</p>
 <p>When a <el>tt:profile</el> element is used by a TTML <emph>Profile Definition Document</emph> instance,
 it serves to publish a machine
-readable specification of a specific TTML Content profile, of which
+readable specification of a specific TTML profile, of which
 this specification defines three such <emph>Profile Definition Documents</emph> in
 <specref ref="profiles"/>.</p>
 <p>The <el>ttp:profile</el> element accepts as its children zero or more
@@ -8764,8 +8772,7 @@
 <def>
 <p>TTML is used in the television industry for the purpose of authoring, transcoding and exchanging timed text information and for delivering captions, subtitles, and
 other metadata for television material repurposed for the Web or, more generally, the Internet.</p>
-<p>There is partial and full support of TTML in components used by several Web browsers plugins, and in a number of caption authoring tools. A TTML verification (including
-validation) utility is available in open source form at <loc href="http://github.com/skynav/ttv">http://github.com/skynav/ttv</loc>.</p>
+<p>There is partial and full support of TTML in components used by several Web browsers plugins, and in a number of caption authoring tools.</p>
 </def>
 </gitem>
 <gitem>