diff -r 14c1ff6a8086 Doc/library/subprocess.rst
--- a/Doc/library/subprocess.rst	Tue Mar 11 08:12:48 2014 +0100
+++ b/Doc/library/subprocess.rst	Tue Mar 11 22:49:24 2014 +0100
@@ -13,6 +13,12 @@
 
    os.system
    os.spawn*
+   os.popen*
+   popen2.*
+   commands.*
+
+Note that it doesn't replace other ways of executing external processes
+from Python, ex. :meth:`os.exec\* <os.execl>` and :meth:`os.fork`.
 
 Information about how the :mod:`subprocess` module can be used to replace these
 modules and functions can be found in the following sections.
diff -r 14c1ff6a8086 Lib/subprocess.py
--- a/Lib/subprocess.py	Tue Mar 11 08:12:48 2014 +0100
+++ b/Lib/subprocess.py	Tue Mar 11 22:49:24 2014 +0100
@@ -15,6 +15,12 @@
 
 os.system
 os.spawn*
+os.popen*
+popen2.*
+commands.*
+
+Note that it doesn't replace other ways of executing external processes
+from Python, ex. os.exec* and os.fork.
 
 Information about how the subprocess module can be used to replace these
 modules and functions can be found below.