diff -r 1a25c29fb571 setup.rst
--- a/setup.rst	Wed Jan 18 00:26:54 2012 +0200
+++ b/setup.rst	Wed Jan 18 02:15:36 2012 +0200
@@ -15,7 +15,8 @@
 ---------------------
 
 CPython is developed using `Mercurial <http://hg-scm.org/>`_
-(commonly abbreviated hg, after the program name).
+(commonly abbreviated hg, after the program name,
+which itself is a reference to the chemical symbol for the element mercury).
 It is easily available for common Unix systems by way of the standard package
 manager; under Windows, you might want to use the `TortoiseHg
 <http://tortoisehg.org/>`_ graphical client.