diff --git a/inbox/rayo-cpa.xml b/inbox/rayo-cpa.xml
index 7da1b645..4e77d199 100644
--- a/inbox/rayo-cpa.xml
+++ b/inbox/rayo-cpa.xml
@@ -28,6 +28,12 @@
     <jid>ben@langfeld.me</jid>
     <uri>http://langfeld.me</uri>
   </author>
+  <revision>
+    <version>0.0.2</version>
+    <date>2014-01-14</date>
+    <initials>bl</initials>
+    <remark><p>Second draft.</p></remark>
+  </revision>
   <revision>
     <version>0.0.1</version>
     <date>2013-10-02</date>
@@ -148,6 +154,10 @@
         <td>urn:xmpp:rayo:cpa:dtmf:1</td>
         <td>Detect DTMF tones.</td>
       </tr>
+      <tr>
+        <td>urn:xmpp:rayo:cpa:vad:1</td>
+        <td>Detect voice activity.</td>
+      </tr>
       <tr>
         <td>urn:xmpp:rayo:cpa:speech:1</td>
         <td>Detect speech and decide human or machine.</td>
@@ -187,9 +197,6 @@
     </table>
   </section2>
 </section1>
-<section1 topic='Use Cases' anchor='usecases'>
-  <p>STRONGLY RECOMMENDED.</p>
-</section1>
 <section1 topic='Determining Support' anchor='support'>
   <p>If a Rayo server supports Rayo CPA, it MUST advertise that fact by returning a feature of "urn:xmpp:rayo|cpa:0" &VNOTE; in response to a &xep0030; information request.</p>
   <example caption="Service Discovery Information Request - Client to Server"><![CDATA[
@@ -217,7 +224,7 @@
   <p>A server MUST document any cases where its behaviour differs from that in this specification (such as lack of support for particular options/components/etc) and return an error whenever a command is not understood. A server MUST NOT silently ignore any instructions.</p>
 </section1>
 <section1 topic='Security Considerations' anchor='security'>
-  <p>None</p>
+  <p>This document introduces no additional security considerations above and beyond those defined in the documents on which it depends.</p>
 </section1>
 <section1 topic='IANA Considerations' anchor='iana'>
   <p>This document requires no interaction with &IANA;.</p>
@@ -229,6 +236,7 @@
       <li>urn:xmpp:rayo:cpa:1</li>
       <li>urn:xmpp:rayo:cpa:beep:1</li>
       <li>urn:xmpp:rayo:cpa:dtmf:1</li>
+      <li>urn:xmpp:rayo:cpa:vad:1</li>
       <li>urn:xmpp:rayo:cpa:speech:1</li>
       <li>urn:xmpp:rayo:cpa:fax-ced:1</li>
       <li>urn:xmpp:rayo:cpa:fax-cng:1</li>
@@ -280,6 +288,7 @@
             <restriction base="token">
               <enumeration value="urn:xmpp:rayo:cpa:beep:1" />
               <enumeration value="urn:xmpp:rayo:cpa:dtmf:1" />
+              <enumeration value="urn:xmpp:rayo:cpa:vad:1" />
               <enumeration value="urn:xmpp:rayo:cpa:speech:1" />
               <enumeration value="urn:xmpp:rayo:cpa:fax-ced:1" />
               <enumeration value="urn:xmpp:rayo:cpa:fax-cng:1" />