diff --git a/doc/sf_and_dist/distributions/nc_chi_squared_example.qbk b/doc/sf_and_dist/distributions/nc_chi_squared_example.qbk
index 7d958cf75..c04a0827c 100644
--- a/doc/sf_and_dist/distributions/nc_chi_squared_example.qbk
+++ b/doc/sf_and_dist/distributions/nc_chi_squared_example.qbk
@@ -2,7 +2,8 @@
 
 (See also the reference documentation for the __non_central_chi_squared_distrib.)
 
-[section:nccs_power_eg Tables of the power function of the [chi][super 2] test.]
+[section:nccs_power_eg Tables of the power function of the chi-squared test.]
+[/[chi super 2 failed to show the chi in pdf why??? (OK in html) so use words.]
 
 [import ../../../example/nc_chi_sq_example.cpp]
 [nccs_eg]
@@ -12,7 +13,7 @@
 [endsect] [/section:nccs_eg Non Central Chi Squared Example]
 
 [/ 
-  Copyright 2006 John Maddock and Paul A. Bristow.
+  Copyright 2006, 2011 John Maddock and Paul A. Bristow.
   Distributed under the Boost Software License, Version 1.0.
   (See accompanying file LICENSE_1_0.txt or copy at
   http://www.boost.org/LICENSE_1_0.txt).