--- /dev/null
+@node munlockall
+@section @code{munlockall}
+@findex munlockall
+
+POSIX specification: @url{http://www.opengroup.org/susv3xsh/munlockall.html}
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on some platforms:
+OSF/1 4.0, Cygwin, mingw, BeOS.
+@end itemize