Actually, the previous batch's comment should have been different;
*this* set of patches is Ka-Ping's final sweep:

The attached patches update the standard library so that all modules
have docstrings beginning with one-line summaries.

A new docstring was added to formatter.  The docstring for os.py
was updated to mention nt, os2, ce in addition to posix, dos, mac.
diff --git a/Lib/os.py b/Lib/os.py
index 129d4b2..118b619 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -1,14 +1,15 @@
-"""os.py -- either mac, dos or posix depending on what system we're on.
+"""OS routines for Mac, DOS, NT, or Posix depending on what system we're on.
 
 This exports:
-  - all functions from either posix or mac, e.g., os.unlink, os.stat, etc.
-  - os.path is either module posixpath or macpath
-  - os.name is either 'posix' or 'mac'
+  - all functions from posix, nt, dos, os2, mac, or ce, e.g. unlink, stat, etc.
+  - os.path is one of the modules posixpath, ntpath, macpath, or dospath
+  - os.name is 'posix', 'nt', 'dos', 'os2', 'mac', or 'ce'
   - os.curdir is a string representing the current directory ('.' or ':')
   - os.pardir is a string representing the parent directory ('..' or '::')
   - os.sep is the (or a most common) pathname separator ('/' or ':' or '\\')
-  - os.altsep is the alternatte pathname separator (None or '/')
+  - os.altsep is the alternate pathname separator (None or '/')
   - os.pathsep is the component separator used in $PATH etc
+  - os.linesep is the line separator in text files ('\r' or '\n' or '\r\n')
   - os.defpath is the default search path for executables
 
 Programs that import and use 'os' stand a better chance of being