@section @code{sleep}
@findex sleep
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/sleep.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/sleep.html}
Gnulib module: sleep
@item
This function is missing on some platforms:
mingw (2005 or newer).
+@item
+This function takes milliseconds as argument and returns @code{void} on some
+platforms:
+mingw (2005 and older).
@end itemize
Portability problems not fixed by Gnulib: