--- cpython/Doc/library/decimal.rst	2016-08-10 20:00:15.484990943 -0600
+++ ../Development/cpython/Doc/library/decimal.rst	2016-08-10 19:39:36.824923564 -0600
@@ -1423,7 +1423,7 @@
 
    .. method:: to_eng_string(x)
 
-      Converts a number to a string, using scientific notation.
+      Converts a number to a string, using engineering notation, with a multiple of 3 exponent.
 
 
    .. method:: to_integral_exact(x)