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describe new return values

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18
man/man3/notify.3
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@ -202,6 +202,24 @@ with argument
.\" are designed to improve the emulation of signals by the ANSI C/POSIX
.\" environment; their use elsewhere is discouraged.
.PP
.I Notify
and
.I atnotify
return \-1 on error and 0 on success.
.I Noted
returns \-1 on error; successful calls to
.I noted
do not return.
.I Noteenable
and
.I notedisable
.RI ( notitfyon
and
.IR notifyoff )
return \-1 on error, 0 if the note was previously disabled (not notified),
and 1 if the note was previously enabled (notified).
.PP
The set of notes a process may receive is system-dependent, but there
is a common set that includes:
.PP