diff -r bb7b14dd5ded Doc/library/stdtypes.rst
--- a/Doc/library/stdtypes.rst	Mon Aug 29 09:37:07 2011 +0200
+++ b/Doc/library/stdtypes.rst	Tue Aug 30 00:23:38 2011 -0400
@@ -1187,6 +1187,13 @@
    breaks are not included in the resulting list unless *keepends* is given and
    true.
 
+   .. note::
+      Python recognizes ``"\r"``, ``"\n"``, and ``"\r\n"`` as line boundaries
+      for strings.
+
+      In addition to these, Unicode strings can have line boundaries of 
+      ``u"\x0b"``, ``u"\x0c"``, ``u"\x85"``, ``u"\u2028"``, and ``u"\u2029"``
+
 
 .. method:: str.startswith(prefix[, start[, end]])