supported on other platforms, but not on Windows due to using the winsock
1.1 header file, even though Emacs was linking to the winsock 2 library.
+** More keys available on MS-Windows.
+Keys normally associated with IMEs, and some exotic keys not normally found
+on standard keyboards have been given names so they can be bound to functions
+inside Emacs. If there are keys on your keyboard that have not been exposed
+to Emacs in the past, try C-h k to see if they are available now.
+
+Emacs can now bind functions to the extra buttons for media player and
+browser control present on some keyboards. These buttons are disabled
+by default, since enabling them prevents their system-wide use when
+Emacs has focus. To enable them, set the variable
+w32-pass-multimedia-buttons to nil. See the doc string of that variable
+for the list of extra keys that are available.
\f
* Incompatible Lisp Changes in Emacs 23.1