@item
This function is declared in @code{<utmp.h>} on glibc, Cygwin,
in @code{<util.h>} on MacOS X 10.5, NetBSD 5.0, OpenBSD 3.8,
@item
This function is declared in @code{<utmp.h>} on glibc, Cygwin,
in @code{<util.h>} on MacOS X 10.5, NetBSD 5.0, OpenBSD 3.8,