Index: /trunk/doc/manual/en_US/user_Installation.xml
===================================================================
--- /trunk/doc/manual/en_US/user_Installation.xml	(revision 61888)
+++ /trunk/doc/manual/en_US/user_Installation.xml	(revision 61889)
@@ -75,5 +75,7 @@
               VirtualBox API (see <xref linkend="VirtualBoxAPI" />). For this
               to work, an already working Windows Python installation on the
-              system is required. Note that Python version &ge; 2.6 required.<footnote>
+              system is required.
+                <note><para>Python version &ge; 2.6 is required. Since VirtualBox 5.1 Python 3 is also supported.</para></note>
+                <footnote>
                   <para>See, for example, <ulink
                   url="http://www.python.org/download/windows/">http://www.python.org/download/windows/</ulink>.</para>
@@ -153,5 +155,7 @@
 
             <glossdef>
-              <para>Python support. Note that Python version &ge; 2.6 required.</para>
+              <para>Python support.
+                <note><para>Python version &ge; 2.6 is required. Since VirtualBox 5.1 Python 3 is also supported.</para></note>
+              </para>
             </glossdef>
           </glossentry>