@itemize
@item
This function is missing on some platforms:
-MacOS X 10.5, FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Cygwin, mingw, Interix 3.5, BeOS.
+MacOS X 10.4, FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Cygwin, mingw, Interix 3.5, BeOS.
@item
As of 2005, no system is known on which @code{waitid} with flag @code{WNOWAIT}
works correctly.