.fi
.in
.PP
-Ancillary data should only be accessed by the macros defined in
+Ancillary data should be accessed only by the macros defined in
.BR cmsg (3).
.PP
As an example, Linux uses this ancillary data mechanism to pass extended
4.4BSD (these function calls first appeared in 4.2BSD),
POSIX.1-2001.
.LP
-POSIX.1-2001 only describes the
+POSIX.1-2001 describes only the
.BR MSG_OOB ,
.BR MSG_PEEK ,
and