diff -r ab5e2b0fba15 Doc/library/time.rst
--- a/Doc/library/time.rst	Thu May 08 10:36:27 2014 +0000
+++ b/Doc/library/time.rst	Sun May 11 18:46:29 2014 -0400
@@ -550,10 +550,12 @@
    +-------+-------------------+---------------------------------+
 
    Note that unlike the C structure, the month value is a range of [1, 12], not
-   [0, 11].  A ``-1`` argument as the daylight
-   savings flag, passed to :func:`mktime` will usually result in the correct
-   daylight savings state to be filled in.
+   [0, 11].  
 
+   In calls to :func:`mktime`, :attr:`tm_isdst` may be set to 1 when daylight 
+   savings time is in effect, and 0 when it is not.  A value of -1 indicates that 
+   this is not known, and will usually result in the correct state being filled in.
+   
    When a tuple with an incorrect length is passed to a function expecting a
    :class:`struct_time`, or having elements of the wrong type, a
    :exc:`TypeError` is raised.