diff -r f0ca1fabb41f Doc/library/fcntl.rst
--- a/Doc/library/fcntl.rst	Tue Jun 23 20:48:52 2015 -0700
+++ b/Doc/library/fcntl.rst	Sat Jul 04 15:58:10 2015 +0800
@@ -13,6 +13,10 @@
 
 This module performs file control and I/O control on file descriptors. It is an
 interface to the :c:func:`fcntl` and :c:func:`ioctl` Unix routines.
+For a complete description of these calls, see the POSIX specification for `fcntl
+<http://pubs.opengroup.org/onlinepubs/009695399/basedefs/fcntl.h.html>`_
+and `ioctl <http://pubs.opengroup.org/onlinepubs/009695399/functions/ioctl.html>`_
+or UNIX manual pages.
 
 All functions in this module take a file descriptor *fd* as their first
 argument.  This can be an integer file descriptor, such as returned by
diff -r f0ca1fabb41f Doc/library/termios.rst
--- a/Doc/library/termios.rst	Tue Jun 23 20:48:52 2015 -0700
+++ b/Doc/library/termios.rst	Sat Jul 04 15:58:10 2015 +0800
@@ -11,9 +11,10 @@
    pair: tty; I/O control
 
 This module provides an interface to the POSIX calls for tty I/O control.  For a
-complete description of these calls, see the POSIX or Unix manual pages.  It is
-only available for those Unix versions that support POSIX *termios* style tty
-I/O control (and then only if configured at installation time).
+complete description of these calls, see `the POSIX specification
+<http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/termios.h.html>`_ or Unix
+manual pages.  It is only available for those Unix versions that support POSIX
+*termios* style tty I/O control (and then only if configured at installation time).
 
 All functions in this module take a file descriptor *fd* as their first
 argument.  This can be an integer file descriptor, such as returned by