man: minor manual edits

man/man3/ioproc.3

@@ -154,12 +154,12 @@ relay(int fd0, int fd1)
 }
 .EE
 .LP
-If the two
+The two
 .I relaythread
-instances were running in different procs, the
+instances are running in the same proc, so the
 common access to
 .I tot
-would be unsafe.
+is safe.
 .PP
 Implement
 .IR ioread :

man/man3/postnote.3

@@ -26,17 +26,15 @@ If
 is
 .BI PNGROUP , 
 the note is delivered to the
-process group which has the process with id
-.I pid
-as a member.
+process group containing the process with id
+.IR pid .
 For
 .B PNGROUP
 only, if the calling process is in the target group, the note is
 .I not
 delivered to that process.
 .PP
-If the write is successful, zero is returned.
-Otherwise \-1 is returned.
+Returns zero if the write succeeds, otherwise \-1.
 .SH SOURCE
 .B \*9/src/lib9/postnote.c
 .SH "SEE ALSO"

man/man3/sysfatal.3

@@ -57,6 +57,8 @@ on the system console.
 can be used safely in multi-threaded programs.
 .SH SOURCE
 .B \*9/src/lib9/sysfatal.c
+.br
+.B \*9/src/lib9/syslog.c
 .SH "SEE ALSO"
 .IR intro (3),
 .IR errstr (3),