.B POLL_HUP
device disconnected
.RE
-.SH "RETURN VALUE"
+.SH RETURN VALUE
.BR sigaction ()
returns 0 on success and \-1 on error.
.SH ERRORS
is made to change the action for
.BR SIGKILL " or " SIGSTOP ", "
which cannot be caught or ignored.
-.SH "CONFORMING TO"
+.SH CONFORMING TO
POSIX.1-2001, SVr4.
.\" SVr4 does not document the EINTR condition.
.SH NOTES
.SH EXAMPLE
See
.BR mprotect (2).
-.SH "SEE ALSO"
+.SH SEE ALSO
.BR kill (1),
.BR kill (2),
.BR killpg (2),