===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/sdiff/sdiff.1,v
retrieving revision 1.19
retrieving revision 1.20
diff -u -r1.19 -r1.20
--- src/usr.bin/sdiff/sdiff.1	2017/10/17 22:47:58	1.19
+++ src/usr.bin/sdiff/sdiff.1	2022/07/25 02:25:55	1.20
@@ -1,9 +1,9 @@
-.\" $OpenBSD: sdiff.1,v 1.19 2017/10/17 22:47:58 schwarze Exp $
+.\" $OpenBSD: sdiff.1,v 1.20 2022/07/25 02:25:55 jsg Exp $
 .\"
 .\" Written by Raymond Lai <ray@cyth.net>.
 .\" Public domain.
 .\"
-.Dd $Mdocdate: October 17 2017 $
+.Dd $Mdocdate: July 25 2022 $
 .Dt SDIFF 1
 .Os
 .Sh NAME
@@ -163,8 +163,11 @@
 .Xr vi 1 ,
 .Xr re_format 7
 .Sh HISTORY
+The
 .Nm
-has been available since
+command first appeared in
+.At III
+and was reimplemented for
 .Ox 3.9 .
 .Sh AUTHORS
 .Nm