--- a/CHANGES.html Wed Apr 05 10:56:05 2017 +0300
+++ b/CHANGES.html Wed Apr 05 11:00:57 2017 +0300
@@ -54,6 +54,8 @@
<h1>Changes from ns-3.26 to ns-3.27</h1>
<h2>New API:</h2>
<ul>
+<li>Added <code>Vector{2,3}D.GetLength ()</code>.</li>
+<li>Overloaded <code>operator+</code> and <code>operator-</code> for <code>Vector{2,3}D</code>.</li>
<li>Added iterator version of WifiHelper::Install() to install Wi-Fi devices on range of nodes.</li>
<li>Added a new attribute in TcpSocketBase to track the advertised window.</li>
<li>Included the model of <b>TCP Ledbat</b>.</li>