--- a/ttml2/spec/ttml2.xml	Wed May 21 16:25:37 2014 -0700
+++ b/ttml2/spec/ttml2.xml	Thu May 22 16:52:39 2014 +0900
@@ -596,7 +596,7 @@
 <gitem id="terms-content-profile">
 <label>[content profile]</label>
 <def>
-<p>A collection of <loc href="#terms-feature">features</loc> and <loc href="#terms-extension">extensions</loc> that must, may, or must not be employed by
+<p>A collection of <loc href="#terms-feature">features</loc> and <loc href="#terms-extension">extensions</loc> that must not, must, or may be employed by
 Timed Text Markup Language content.</p>
 <p></p>
 </def>
@@ -759,7 +759,7 @@
 <gitem id="terms-nesting-profile">
 <label>[nesting profile]</label>
 <def>
-<p>A <loc href="#terms-profile">profile</loc> defined my making reference to one or more child <el>ttp:profile</el> element(s), wherein a
+<p>A <loc href="#terms-profile">profile</loc> defined by making reference to one or more child <el>ttp:profile</el> element(s), wherein a
 profile combination method determines how profile specifications from the multiple child <el>ttp:profile</el> element(s) are combined.</p>
 </def>
 </gitem>
@@ -1872,7 +1872,7 @@
 <item>
 <p>if the <phrase role="strong">value</phrase> field of <emph>S</emph> is <code>required</code>, and the <loc href="#terms-content-processor">content processor</loc>
 does not support <emph>S</emph>, then abort processing of the <loc href="#terms-document-instance">document instance</loc> unless overridden
-by the end-user or someimplementation specific parameter traceable to an end-user or to a user or system configuration setting;</p>
+by the end-user or some implementation specific parameter traceable to an end-user or to a user or system configuration setting;</p>
 </item>
 </olist>
 </item>