I think these two are good for the change as well:
Index: getrlimit.2
===================================================================
RCS file: /cvs/src/lib/libc/sys/getrlimit.2,v
retrieving revision 1.24
diff -u -p -r1.24 getrlimit.2
--- getrlimit.2 20 Nov 2014 03:19:23 -0000 1.24
+++ getrlimit.2 10 Dec 2014 12:07:20 -0000
@@ -174,11 +174,7 @@ When the soft CPU time limit is exceeded
is sent to the
offending process.
.Sh RETURN VALUES
-A 0 return value indicates that the call succeeded, changing
-or returning the resource limit.
-A return value of \-1 indicates that an error occurred, and an error code
-is stored in the global variable
-.Va errno .
+.Rv -std
.Sh ERRORS
.Fn getrlimit
and
Index: pipe.2
===================================================================
RCS file: /cvs/src/lib/libc/sys/pipe.2,v
retrieving revision 1.17
diff -u -p -r1.17 pipe.2
--- pipe.2 31 Aug 2014 01:42:36 -0000 1.17
+++ pipe.2 10 Dec 2014 12:09:50 -0000
@@ -91,10 +91,7 @@ flag in the
.Fa flags
argument.
.Sh RETURN VALUES
-On successful creation of the pipe, zero is returned.
-Otherwise, a value of \-1 is returned and the variable
-.Va errno
-set to indicate the error.
+.Rv -std
.Sh ERRORS
.Fn pipe
and
