From 549b4dd83493a5eea4dbf439fc4688fcb17e84a8 Mon Sep 17 00:00:00 2001
From: Vitor Santos Costa <vsc@dcc.fc.up.pt>
Date: Mon, 5 May 2014 14:01:21 +0100
Subject: [PATCH] add header

---
 library/listing.yap | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/library/listing.yap b/library/listing.yap
index e806ee5c1..b11b18a31 100644
--- a/library/listing.yap
+++ b/library/listing.yap
@@ -1,3 +1,20 @@
+/*************************************************************************
+*									 *
+*	 YAP Prolog 							 *
+*									 *
+*	Yap Prolog was developed at NCCUP - Universidade do Porto	 *
+*									 *
+* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997	 *
+*									 *
+**************************************************************************
+*									 *
+* File:		listing.yap						 *
+* Last rev:								 *
+* mods:									 *
+* comments:	listing a prolog program				 *
+*									 *
+*************************************************************************/
+
 /* 
 
  emulates listing.pl, but just the interface for now.