Update standards conformance.

lib/libc/sys/pipe.2

@@ -1,4 +1,4 @@
-.\"	$NetBSD: pipe.2,v 1.6 1995/02/27 12:35:27 cgd Exp $
+.\"	$NetBSD: pipe.2,v 1.7 1997/05/15 17:05:18 kleink Exp $
 .\"
 .\" Copyright (c) 1980, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -107,6 +107,11 @@ space.
 .Xr write 2 ,
 .Xr fork 2 ,
 .Xr socketpair 2
+.Sh STANDARDS
+The
+.Fn pipe
+function conforms to
+.St -p1003.1-88 .
 .Sh HISTORY
 A
 .Fn pipe