From 358952cac088977287391b98a8a834141d20f42c Mon Sep 17 00:00:00 2001
From: Greg Lehey <grog@FreeBSD.org>
Date: Sun, 29 Mar 2020 04:14:57 +0000
Subject: [PATCH] Add STANDARDS section

PR:		239723
Submitted by:	Gordon Bergling
Reported by:	Gordon Bergling
---
 usr.bin/ncal/ncal.1 | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/usr.bin/ncal/ncal.1 b/usr.bin/ncal/ncal.1
index 841cb839c84..1a29b4d3e9a 100644
--- a/usr.bin/ncal/ncal.1
+++ b/usr.bin/ncal/ncal.1
@@ -179,6 +179,24 @@ Highlighting of dates is disabled if stdout is not a tty.
 .Sh SEE ALSO
 .Xr calendar 3 ,
 .Xr strftime 3
+.Sh STANDARDS
+The
+.Nm
+utility is compliant with the
+X/Open System Interfaces option of the
+.St -p1003.1-2008
+specification.
+.Pp
+The flags
+.Op Fl 3hyJeopw ,
+as well as the ability to specify a month name as a single argument,
+are extensions to that specification.
+.Pp
+The week number computed by
+.Fl w
+is compliant with the
+.St -iso8601
+specification.
 .Sh HISTORY
 A
 .Nm