expand STANDARDS somewhat; ok millert

bin/ls/ls.1

@@ -1,4 +1,4 @@
-.\"	$OpenBSD: ls.1,v 1.66 2011/08/31 08:48:40 jmc Exp $
+.\"	$OpenBSD: ls.1,v 1.67 2014/03/28 18:33:26 jmc Exp $
 .\"	$NetBSD: ls.1,v 1.14 1995/12/05 02:44:01 jtc Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1991, 1993, 1994
@@ -33,7 +33,7 @@
 .\"
 .\"     @(#)ls.1	8.7 (Berkeley) 7/29/94
 .\"
-.Dd $Mdocdate: August 31 2011 $
+.Dd $Mdocdate: March 28 2014 $
 .Dt LS 1
 .Os
 .Sh NAME
@@ -474,12 +474,26 @@ The
 .Nm
 utility is compliant with the
 .St -p1003.1-2008
-specification.
+specification,
+except behaviour for the
+.Fl f
+and
+.Fl o
+flags differs.
 .Pp
 The flags
-.Op Fl hT
+.Op Fl hT ,
+as well as the
+.Ev BLOCKSIZE
+environment variable,
 are extensions to that specification.
 .Pp
+The flags
+.Op Fl go
+are marked by
+.St -p1003.1-2008
+as being an X/Open System Interfaces option.
+.Pp
 Historically, the
 .Fl g
 flag was used to specify that the group field be included in long listings.
@@ -489,13 +503,6 @@ files and the meaning of the
 flag has been changed in order to be compatible with the
 .St -p1003.1-2008
 specification.
-.Pp
-Behaviour for the
-.Fl f
-and
-.Fl o
-flags differs between this implementation and
-.St -p1003.1-2008 .
 .Sh HISTORY
 An
 .Nm