DragonFlyBSD

diff --git a/bin/expr/expr.1 b/bin/expr/expr.1

index c3a2819..891688b 100644

--- a/bin/expr/expr.1

+++ b/bin/expr/expr.1

@@ -30,7 +30,7 @@

.\"

.\" $FreeBSD: src/bin/expr/expr.1,v 1.9.2.4 2003/05/16 22:55:19 keramida Exp $

.\"

-.Dd April 10, 2013

+.Dd August 23, 2016

.Dt EXPR 1

.Os

.Sh NAME

@@ -136,3 +136,22 @@ The

.Nm

utility conforms to

.St -p1003.2 .

+.Sh HISTORY

+An

+.Nm

+utility first appeared in the Programmer's Workbench (PWB/UNIX).

+A public domain version of

+.Nm

+written by

+.An Pace Willisson

+.Aq pace@blitz.com

+appeared in

+.Bx 386 0.1 .

+.Sh AUTHORS

+Initial implementation by

+.An Pace Willisson

+.Aq pace@blitz.com

+was largely rewritten by

+.An -nosplit

+.An J.T. Conklin

+.Aq jtc@FreeBSD.org .