--- a/emacs.rst	Wed Feb 09 15:32:17 2011 +0200
+++ b/emacs.rst	Wed Feb 16 11:33:01 2011 +0200
@@ -158,6 +158,7 @@
   window-system-version     - for windows only
   operating-system-release  - release of the operating system Emacs is running on
   system-configuration      - like configuration triplet: cpu-manufacturer-os
+  system-configuration-options
   system-name               - host name of the machine you are running on
   system-time-locale
   system-type               - indicating the type of operating system you are using: