--- a/windows.rst	Thu Sep 17 23:54:29 2015 +0300
+++ b/windows.rst	Fri Sep 18 11:10:19 2015 +0300
@@ -108,6 +108,10 @@
 
   cmd> slmgr -rearm
 
+Check activation::
+
+  cmd> slmgr /xpr
+
 See:
 
   http://www.microsoft.com/genuine/selfhelp/XPPkuinst.aspx?sGuid=bab9e103-6365-44dd-9337-93f0cd9dd4b7&displaylang=en