diff --git a/lang/basic/src.old/bem.c b/lang/basic/src.old/bem.c
index f521df54..e266de2d 100644
--- a/lang/basic/src.old/bem.c
+++ b/lang/basic/src.old/bem.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/bem.h b/lang/basic/src.old/bem.h
index cfdb1cd3..d664038b 100644
--- a/lang/basic/src.old/bem.h
+++ b/lang/basic/src.old/bem.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <stdio.h>
 #include <ctype.h>
 #include <signal.h>
diff --git a/lang/basic/src.old/compile.c b/lang/basic/src.old/compile.c
index 30192203..66494049 100644
--- a/lang/basic/src.old/compile.c
+++ b/lang/basic/src.old/compile.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/eval.c b/lang/basic/src.old/eval.c
index 4b09c541..afbd88b3 100644
--- a/lang/basic/src.old/eval.c
+++ b/lang/basic/src.old/eval.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/func.c b/lang/basic/src.old/func.c
index 2bbddc9a..00e91602 100644
--- a/lang/basic/src.old/func.c
+++ b/lang/basic/src.old/func.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/gencode.c b/lang/basic/src.old/gencode.c
index 4b3c3e34..e76324e6 100644
--- a/lang/basic/src.old/gencode.c
+++ b/lang/basic/src.old/gencode.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/graph.c b/lang/basic/src.old/graph.c
index 67db1f27..0dd22171 100644
--- a/lang/basic/src.old/graph.c
+++ b/lang/basic/src.old/graph.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/graph.h b/lang/basic/src.old/graph.h
index de6d0aea..82046d51 100644
--- a/lang/basic/src.old/graph.h
+++ b/lang/basic/src.old/graph.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #
 
 #ifndef NORCSID
diff --git a/lang/basic/src.old/initialize.c b/lang/basic/src.old/initialize.c
index 0af71014..7b71ed6c 100644
--- a/lang/basic/src.old/initialize.c
+++ b/lang/basic/src.old/initialize.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 #include <em_path.h>
 
diff --git a/lang/basic/src.old/parsepar.c b/lang/basic/src.old/parsepar.c
index df016ff4..c2bd77ca 100644
--- a/lang/basic/src.old/parsepar.c
+++ b/lang/basic/src.old/parsepar.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/split.c b/lang/basic/src.old/split.c
index 72c289b6..2ebff211 100644
--- a/lang/basic/src.old/split.c
+++ b/lang/basic/src.old/split.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/symbols.c b/lang/basic/src.old/symbols.c
index 61ffeef8..a067399b 100644
--- a/lang/basic/src.old/symbols.c
+++ b/lang/basic/src.old/symbols.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/symbols.h b/lang/basic/src.old/symbols.h
index a575d1db..4b4f2ea8 100644
--- a/lang/basic/src.old/symbols.h
+++ b/lang/basic/src.old/symbols.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #ifndef NORCSID
 # define RCS_SYMB	"$Header$"
 #endif
diff --git a/lang/basic/src.old/util.c b/lang/basic/src.old/util.c
index 2905abd4..3fc7c71d 100644
--- a/lang/basic/src.old/util.c
+++ b/lang/basic/src.old/util.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/lang/basic/src.old/yywrap.c b/lang/basic/src.old/yywrap.c
index 096e2ad2..12b6938d 100644
--- a/lang/basic/src.old/yywrap.c
+++ b/lang/basic/src.old/yywrap.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "bem.h"
 
 #ifndef NORSCID
diff --git a/modules/h/em.h b/modules/h/em.h
index 4257467e..3e1e209a 100644
--- a/modules/h/em.h
+++ b/modules/h/em.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "em_arith.h"
 #include "em_label.h"
 #include "em_code.h"
diff --git a/modules/h/em_arith.h b/modules/h/em_arith.h
index a5dbb2ec..1e5aa748 100644
--- a/modules/h/em_arith.h
+++ b/modules/h/em_arith.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #define arith	long
diff --git a/modules/h/em_code.h b/modules/h/em_code.h
index 9c3f28e5..9a7454c5 100644
--- a/modules/h/em_code.h
+++ b/modules/h/em_code.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #define C_lae_dnam _1_C_lae_dnam
 #define C_lae_dlb _2_C_lae_dlb
 #define C_sde_dnam _3_C_sde_dnam
diff --git a/modules/h/em_label.h b/modules/h/em_label.h
index 8665fb7a..ba9fd44c 100644
--- a/modules/h/em_label.h
+++ b/modules/h/em_label.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #define label unsigned int
diff --git a/modules/src/alloc/Malloc.c b/modules/src/alloc/Malloc.c
index 63dee388..65bf7da6 100644
--- a/modules/src/alloc/Malloc.c
+++ b/modules/src/alloc/Malloc.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	M E M O R Y  A L L O C A T I O N  R O U T I N E S	*/
 
 /*	The memory allocation routines offered in this file are:
diff --git a/modules/src/alloc/No_Mem.c b/modules/src/alloc/No_Mem.c
index 72c9025a..a7cb29b6 100644
--- a/modules/src/alloc/No_Mem.c
+++ b/modules/src/alloc/No_Mem.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	<system.h>
 
 No_Mem()
diff --git a/modules/src/alloc/botch.c b/modules/src/alloc/botch.c
index e163c286..8a8b9f53 100644
--- a/modules/src/alloc/botch.c
+++ b/modules/src/alloc/botch.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	botch - write garbage over a chunk of memory, useful if you want
 		to check if freed memory is used inappopriately.
 */
diff --git a/modules/src/alloc/clear.c b/modules/src/alloc/clear.c
index ad8d6038..3781548e 100644
--- a/modules/src/alloc/clear.c
+++ b/modules/src/alloc/clear.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	clear - clear a block of memory, and try to do it fast.
 */
 
diff --git a/modules/src/alloc/st_alloc.c b/modules/src/alloc/st_alloc.c
index 434fa7c0..4d3eb486 100644
--- a/modules/src/alloc/st_alloc.c
+++ b/modules/src/alloc/st_alloc.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	st_alloc - get a structure from a free list. If no structures left,
 		create new ones. The structures for which this works are
 		supposed to have as their first tag the string "next", which
diff --git a/modules/src/alloc/std_alloc.c b/modules/src/alloc/std_alloc.c
index 2f8697d0..6efe6945 100644
--- a/modules/src/alloc/std_alloc.c
+++ b/modules/src/alloc/std_alloc.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	st_alloc - get a structure from a free list. If no structures left,
 		create new ones. The structures for which this works are
 		supposed to have as their first tag the string "next", which
diff --git a/modules/src/assert/BadAssert.c b/modules/src/assert/BadAssert.c
index aa099500..865ed24a 100644
--- a/modules/src/assert/BadAssert.c
+++ b/modules/src/assert/BadAssert.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* _BadAssertion: used for debugging purposes. It should give an error message
 	indicated by the parameters, and then give a core dump
 */
diff --git a/modules/src/em_code/e/C_failed.c b/modules/src/em_code/e/C_failed.c
index a37d34f3..f4321469 100644
--- a/modules/src/em_code/e/C_failed.c
+++ b/modules/src/em_code/e/C_failed.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <system.h>
 
 C_failed()
diff --git a/modules/src/em_code/e/em.c b/modules/src/em_code/e/em.c
index 963e853f..b678fc78 100644
--- a/modules/src/em_code/e/em.c
+++ b/modules/src/em_code/e/em.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* EM CODE OUTPUT ROUTINES */
 
 #include <system.h>
diff --git a/modules/src/em_code/k/C_failed.c b/modules/src/em_code/k/C_failed.c
index a37d34f3..f4321469 100644
--- a/modules/src/em_code/k/C_failed.c
+++ b/modules/src/em_code/k/C_failed.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <system.h>
 
 C_failed()
diff --git a/modules/src/em_code/k/em.c b/modules/src/em_code/k/em.c
index 7f6d179b..4c27ffd0 100644
--- a/modules/src/em_code/k/em.c
+++ b/modules/src/em_code/k/em.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 /* EM CODE OUTPUT ROUTINES */
 
diff --git a/modules/src/em_mes/C_ms_com.c b/modules/src/em_mes/C_ms_com.c
index 050d32c3..160403c5 100644
--- a/modules/src/em_mes/C_ms_com.c
+++ b/modules/src/em_mes/C_ms_com.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_ego.c b/modules/src/em_mes/C_ms_ego.c
index acd27c5f..7c7d87c9 100644
--- a/modules/src/em_mes/C_ms_ego.c
+++ b/modules/src/em_mes/C_ms_ego.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_emx.c b/modules/src/em_mes/C_ms_emx.c
index f585bd29..3fa44717 100644
--- a/modules/src/em_mes/C_ms_emx.c
+++ b/modules/src/em_mes/C_ms_emx.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_err.c b/modules/src/em_mes/C_ms_err.c
index 037e78ac..a8c480a8 100644
--- a/modules/src/em_mes/C_ms_err.c
+++ b/modules/src/em_mes/C_ms_err.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_flt.c b/modules/src/em_mes/C_ms_flt.c
index 4d63a820..952f31aa 100644
--- a/modules/src/em_mes/C_ms_flt.c
+++ b/modules/src/em_mes/C_ms_flt.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_gto.c b/modules/src/em_mes/C_ms_gto.c
index d169cc1c..50b00ef4 100644
--- a/modules/src/em_mes/C_ms_gto.c
+++ b/modules/src/em_mes/C_ms_gto.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_opt.c b/modules/src/em_mes/C_ms_opt.c
index 097c2747..a3a03281 100644
--- a/modules/src/em_mes/C_ms_opt.c
+++ b/modules/src/em_mes/C_ms_opt.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_par.c b/modules/src/em_mes/C_ms_par.c
index 09e1640a..826a9dcc 100644
--- a/modules/src/em_mes/C_ms_par.c
+++ b/modules/src/em_mes/C_ms_par.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_reg.c b/modules/src/em_mes/C_ms_reg.c
index 9da6068c..eeb6e1e1 100644
--- a/modules/src/em_mes/C_ms_reg.c
+++ b/modules/src/em_mes/C_ms_reg.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/em_mes/C_ms_src.c b/modules/src/em_mes/C_ms_src.c
index fb31239d..eb1106fe 100644
--- a/modules/src/em_mes/C_ms_src.c
+++ b/modules/src/em_mes/C_ms_src.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <em.h>
 #include <em_mes.h>
 
diff --git a/modules/src/input/AtEoIF.c b/modules/src/input/AtEoIF.c
index 7136fcf2..af580bc8 100644
--- a/modules/src/input/AtEoIF.c
+++ b/modules/src/input/AtEoIF.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 /*	AtEoIF : a routine doing nothing. It is called at the end of an
diff --git a/modules/src/input/AtEoIT.c b/modules/src/input/AtEoIT.c
index ceabdebb..e303f5e5 100644
--- a/modules/src/input/AtEoIT.c
+++ b/modules/src/input/AtEoIT.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 /*	AtEoIT : a routine doing nothing. It is called at the end of an
diff --git a/modules/src/malloc/check.c b/modules/src/malloc/check.c
index cb88d471..b8f76ca8 100644
--- a/modules/src/malloc/check.c
+++ b/modules/src/malloc/check.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	<stdio.h>
 #include	"param.h"
 #include	"impl.h"
diff --git a/modules/src/malloc/check.h b/modules/src/malloc/check.h
index c9697c7e..7a074708 100644
--- a/modules/src/malloc/check.h
+++ b/modules/src/malloc/check.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #ifdef	CHECK
 
 public check_mallinks(), calc_checksum(), check_work_empty();
diff --git a/modules/src/malloc/getsize.c b/modules/src/malloc/getsize.c
index d7cd3a49..098af020 100644
--- a/modules/src/malloc/getsize.c
+++ b/modules/src/malloc/getsize.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	find out if a pointer-sized integer, preferably unsigned,
 	must be declared as an unsigned int or a long
 */
diff --git a/modules/src/malloc/global.c b/modules/src/malloc/global.c
index 0061ed4e..367ce580 100644
--- a/modules/src/malloc/global.c
+++ b/modules/src/malloc/global.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	"param.h"
 #include	"impl.h"
 
diff --git a/modules/src/malloc/impl.h b/modules/src/malloc/impl.h
index 8c39f954..77b5344a 100644
--- a/modules/src/malloc/impl.h
+++ b/modules/src/malloc/impl.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	This file essentially describes how the mallink info block
 	is implemented.
 */
diff --git a/modules/src/malloc/log.c b/modules/src/malloc/log.c
index 9def2837..5851ce0f 100644
--- a/modules/src/malloc/log.c
+++ b/modules/src/malloc/log.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	"param.h"
 #include	"impl.h"
 #include	"check.h"
diff --git a/modules/src/malloc/log.h b/modules/src/malloc/log.h
index c69f2f66..61269e3e 100644
--- a/modules/src/malloc/log.h
+++ b/modules/src/malloc/log.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	Algorithms to manipulate the doubly-linked lists of free
 	chunks.
 */
diff --git a/modules/src/malloc/mal.c b/modules/src/malloc/mal.c
index 629318cf..a07725a6 100644
--- a/modules/src/malloc/mal.c
+++ b/modules/src/malloc/mal.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	"param.h"
 #include	"impl.h"
 #include	"check.h"
diff --git a/modules/src/malloc/param.h b/modules/src/malloc/param.h
index a89e6b99..92457e3e 100644
--- a/modules/src/malloc/param.h
+++ b/modules/src/malloc/param.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	"size_type.h"
 
 /*#	define	NON_STANDARD	/*	If defined, the contents of a block
diff --git a/modules/src/malloc/phys.c b/modules/src/malloc/phys.c
index da42536e..2bd82259 100644
--- a/modules/src/malloc/phys.c
+++ b/modules/src/malloc/phys.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include	"param.h"
 #include	"impl.h"
 #include	"check.h"
diff --git a/modules/src/malloc/phys.h b/modules/src/malloc/phys.h
index f11d4765..44f6d89a 100644
--- a/modules/src/malloc/phys.h
+++ b/modules/src/malloc/phys.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	Algorithms to manipulate the doubly-linked list of physical
 	chunks.
 */
diff --git a/modules/src/object/byte_order.c b/modules/src/object/byte_order.c
index cc9990e4..5801d53d 100644
--- a/modules/src/object/byte_order.c
+++ b/modules/src/object/byte_order.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <stdio.h>
 
 char	bytes_reversed = 0;
diff --git a/modules/src/object/object.h b/modules/src/object/object.h
index 87eb933e..61cdb9f9 100644
--- a/modules/src/object/object.h
+++ b/modules/src/object/object.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "byte_order.h"
 
 #if CHAR_UNSIGNED
diff --git a/modules/src/object/rd.c b/modules/src/object/rd.c
index 71156002..c195116d 100644
--- a/modules/src/object/rd.c
+++ b/modules/src/object/rd.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <out.h>
 #include "object.h"
 
diff --git a/modules/src/object/rd_arhdr.c b/modules/src/object/rd_arhdr.c
index bce8b183..f78cf8c3 100644
--- a/modules/src/object/rd_arhdr.c
+++ b/modules/src/object/rd_arhdr.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <arch.h>
 #include "object.h"
 
diff --git a/modules/src/object/rd_bytes.c b/modules/src/object/rd_bytes.c
index 35272b16..c0109d4c 100644
--- a/modules/src/object/rd_bytes.c
+++ b/modules/src/object/rd_bytes.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #define MININT		(1 << (sizeof(int) * 8 - 1))
 #define MAXCHUNK	(~MININT)	/* Highest count we read(2).	*/
 /* Unfortunately, MAXCHUNK is too large with some  compilers. Put it in
diff --git a/modules/src/object/rd_int2.c b/modules/src/object/rd_int2.c
index 7dbc2b57..534d3edb 100644
--- a/modules/src/object/rd_int2.c
+++ b/modules/src/object/rd_int2.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "object.h"
 
 int
diff --git a/modules/src/object/rd_long.c b/modules/src/object/rd_long.c
index af369be2..36e424a4 100644
--- a/modules/src/object/rd_long.c
+++ b/modules/src/object/rd_long.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "object.h"
 
 long
diff --git a/modules/src/object/rd_ranlib.c b/modules/src/object/rd_ranlib.c
index f1797cfd..0a36c75b 100644
--- a/modules/src/object/rd_ranlib.c
+++ b/modules/src/object/rd_ranlib.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <ranlib.h>
 #include "object.h"
 
diff --git a/modules/src/object/rd_unsig2.c b/modules/src/object/rd_unsig2.c
index 5321c0d2..1de036eb 100644
--- a/modules/src/object/rd_unsig2.c
+++ b/modules/src/object/rd_unsig2.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "object.h"
 
 unsigned int
diff --git a/modules/src/object/wr.c b/modules/src/object/wr.c
index 165a4dca..2b57e494 100644
--- a/modules/src/object/wr.c
+++ b/modules/src/object/wr.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*
  * You can choose between two strategies:
  *	- Open the output file several times, once for each logical part, and
diff --git a/modules/src/object/wr_arhdr.c b/modules/src/object/wr_arhdr.c
index 6ad9b99c..b0e2a369 100644
--- a/modules/src/object/wr_arhdr.c
+++ b/modules/src/object/wr_arhdr.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <arch.h>
 #include "object.h"
 
diff --git a/modules/src/object/wr_bytes.c b/modules/src/object/wr_bytes.c
index f7969b89..fa5e2f81 100644
--- a/modules/src/object/wr_bytes.c
+++ b/modules/src/object/wr_bytes.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #define MININT		(1 << (sizeof(int) * 8 - 1))
 #define MAXCHUNK	(~MININT)	/* Highest count we write(2).	*/
 /* Notice that MAXCHUNK itself might be too large with some compilers.
diff --git a/modules/src/object/wr_int2.c b/modules/src/object/wr_int2.c
index d836a4a9..741bacbc 100644
--- a/modules/src/object/wr_int2.c
+++ b/modules/src/object/wr_int2.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "object.h"
 
 wr_int2(fd, i)
diff --git a/modules/src/object/wr_long.c b/modules/src/object/wr_long.c
index 1d9217ea..ebb532fc 100644
--- a/modules/src/object/wr_long.c
+++ b/modules/src/object/wr_long.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include "object.h"
 
 wr_long(fd, l)
diff --git a/modules/src/object/wr_putc.c b/modules/src/object/wr_putc.c
index c5b05c57..73f87bdb 100644
--- a/modules/src/object/wr_putc.c
+++ b/modules/src/object/wr_putc.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <stdio.h>
 
 static char buf[BUFSIZ];
diff --git a/modules/src/object/wr_ranlib.c b/modules/src/object/wr_ranlib.c
index 0a8516a9..5f0bd223 100644
--- a/modules/src/object/wr_ranlib.c
+++ b/modules/src/object/wr_ranlib.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 #include <ranlib.h>
 #include "object.h"
 
diff --git a/modules/src/print/doprnt.c b/modules/src/print/doprnt.c
index 7dca0ea9..a5f6d938 100644
--- a/modules/src/print/doprnt.c
+++ b/modules/src/print/doprnt.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/print/format.c b/modules/src/print/format.c
index d040e8d6..6faf5d46 100644
--- a/modules/src/print/format.c
+++ b/modules/src/print/format.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 char *long2str();
diff --git a/modules/src/print/fprint.c b/modules/src/print/fprint.c
index 97b8ebbe..3624bdb8 100644
--- a/modules/src/print/fprint.c
+++ b/modules/src/print/fprint.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/print/param.h b/modules/src/print/param.h
index 45bb5c84..884ef3e9 100644
--- a/modules/src/print/param.h
+++ b/modules/src/print/param.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #define SSIZE 1024
diff --git a/modules/src/print/print.c b/modules/src/print/print.c
index dee93c23..089d2b02 100644
--- a/modules/src/print/print.c
+++ b/modules/src/print/print.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/print/print.h b/modules/src/print/print.h
index 06bfc665..ff82fe40 100644
--- a/modules/src/print/print.h
+++ b/modules/src/print/print.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #define stdin	STDIN
diff --git a/modules/src/print/sprint.c b/modules/src/print/sprint.c
index 64360ffa..97ad7e0d 100644
--- a/modules/src/print/sprint.c
+++ b/modules/src/print/sprint.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/read_em/EM_vars.c b/modules/src/read_em/EM_vars.c
index 347ee07e..f623dc5d 100644
--- a/modules/src/read_em/EM_vars.c
+++ b/modules/src/read_em/EM_vars.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 /* Variables must be declared somewhere ... */
diff --git a/modules/src/read_em/em_comp.h b/modules/src/read_em/em_comp.h
index fea23e0f..a2babeb8 100644
--- a/modules/src/read_em/em_comp.h
+++ b/modules/src/read_em/em_comp.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 struct e_instr {
diff --git a/modules/src/read_em/mkcalls.c b/modules/src/read_em/mkcalls.c
index fb329efb..bc9be5cd 100644
--- a/modules/src/read_em/mkcalls.c
+++ b/modules/src/read_em/mkcalls.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	makecalls: expand a datastructure as delivered by "EM_getline"
 	into calls to the procedural interface.
 	Exported routine:
diff --git a/modules/src/read_em/read_em.c b/modules/src/read_em/read_em.c
index a028b6ef..1eedd463 100644
--- a/modules/src/read_em/read_em.c
+++ b/modules/src/read_em/read_em.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	Read_em: a module to read either compact or human readable EM code.
 	Exported are the following routines:
 	EM_open() :	has a parameter representing either a pointer to a
diff --git a/modules/src/read_em/reade.c b/modules/src/read_em/reade.c
index 4f25a2b4..6438371d 100644
--- a/modules/src/read_em/reade.c
+++ b/modules/src/read_em/reade.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	This file is ment to be included in the file read_emeV.c.
 	It contains the part that takes care of the reading of human readable
 	EM-code.
diff --git a/modules/src/read_em/readk.c b/modules/src/read_em/readk.c
index 1e147882..f6c44db3 100644
--- a/modules/src/read_em/readk.c
+++ b/modules/src/read_em/readk.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	This file must be included in the file "read_emk.c".
 	It takes care of the reading of compact EM code.
 */
diff --git a/modules/src/string/bts2str.c b/modules/src/string/bts2str.c
index d6a4705d..ca5b038f 100644
--- a/modules/src/string/bts2str.c
+++ b/modules/src/string/bts2str.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	bts2str() turns a row of bytes b with length n into string s
 	The ASCII set of characters is used.
 	86/03/17 EHB
diff --git a/modules/src/string/btscat.c b/modules/src/string/btscat.c
index a5f3caf6..99bf7347 100644
--- a/modules/src/string/btscat.c
+++ b/modules/src/string/btscat.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* btscat()
 */
 
diff --git a/modules/src/string/btscmp.c b/modules/src/string/btscmp.c
index 32e794b5..25b5f994 100644
--- a/modules/src/string/btscmp.c
+++ b/modules/src/string/btscmp.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* btscmp()
 */
 
diff --git a/modules/src/string/btscpy.c b/modules/src/string/btscpy.c
index e5c6adbb..5440843b 100644
--- a/modules/src/string/btscpy.c
+++ b/modules/src/string/btscpy.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* btscpy()
 */
 
diff --git a/modules/src/string/btszero.c b/modules/src/string/btszero.c
index c4aca369..9184ec05 100644
--- a/modules/src/string/btszero.c
+++ b/modules/src/string/btszero.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* btszero()
 */
 
diff --git a/modules/src/string/long2str.c b/modules/src/string/long2str.c
index b50eaa0e..ead4e28f 100644
--- a/modules/src/string/long2str.c
+++ b/modules/src/string/long2str.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* Integer to String translator
 	-> base is a value from [-16,-2] V [2,16]
 	-> base < 0: see 'val' as unsigned value
diff --git a/modules/src/string/str2bts.c b/modules/src/string/str2bts.c
index eec3b645..583b5c44 100644
--- a/modules/src/string/str2bts.c
+++ b/modules/src/string/str2bts.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* str2bts -- (1985, EHB)
 */
 static
diff --git a/modules/src/string/str2long.c b/modules/src/string/str2long.c
index a058987c..4883c693 100644
--- a/modules/src/string/str2long.c
+++ b/modules/src/string/str2long.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* str2long()
 */
 
diff --git a/modules/src/string/strcat.c b/modules/src/string/strcat.c
index 861d663f..8b8776ee 100644
--- a/modules/src/string/strcat.c
+++ b/modules/src/string/strcat.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* append t to s
 */
 char *
diff --git a/modules/src/string/strcmp.c b/modules/src/string/strcmp.c
index ca69d45f..0796c1c2 100644
--- a/modules/src/string/strcmp.c
+++ b/modules/src/string/strcmp.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	return negative, zero or positive value if
 	resp. s < t, s == t or s > t
 */
diff --git a/modules/src/string/strcpy.c b/modules/src/string/strcpy.c
index 409d0bf3..93415932 100644
--- a/modules/src/string/strcpy.c
+++ b/modules/src/string/strcpy.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* Copy t into s
 */
 char *
diff --git a/modules/src/string/strindex.c b/modules/src/string/strindex.c
index 49e44644..0d7bdf49 100644
--- a/modules/src/string/strindex.c
+++ b/modules/src/string/strindex.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* strindex() -- (86/03/18 EHB)
 */
 
diff --git a/modules/src/string/strlen.c b/modules/src/string/strlen.c
index 581fcbd5..3b8d36e6 100644
--- a/modules/src/string/strlen.c
+++ b/modules/src/string/strlen.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* return length of s
 */
 int
diff --git a/modules/src/string/strncat.c b/modules/src/string/strncat.c
index 881454a7..fb00dd86 100644
--- a/modules/src/string/strncat.c
+++ b/modules/src/string/strncat.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* append t to s, upto n characters	
 */
 char *
diff --git a/modules/src/string/strncmp.c b/modules/src/string/strncmp.c
index 86d39c02..c9147dcd 100644
--- a/modules/src/string/strncmp.c
+++ b/modules/src/string/strncmp.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /*	return negative, zero or positive value if
 	resp. s < t, s == t or s > t; compare at most n characters
 */
diff --git a/modules/src/string/strncpy.c b/modules/src/string/strncpy.c
index f554d0c2..cdfab741 100644
--- a/modules/src/string/strncpy.c
+++ b/modules/src/string/strncpy.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* Copy t into s, upto n characters
 */
 char *
diff --git a/modules/src/string/strrindex.c b/modules/src/string/strrindex.c
index d55bf01b..f74c653f 100644
--- a/modules/src/string/strrindex.c
+++ b/modules/src/string/strrindex.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 char *
 strrindex(str, chr)
 	register char *str, chr;
diff --git a/modules/src/string/strzero.c b/modules/src/string/strzero.c
index 86036a92..4f56d38f 100644
--- a/modules/src/string/strzero.c
+++ b/modules/src/string/strzero.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* strzero()
 */
 
diff --git a/modules/src/system/access.c b/modules/src/system/access.c
index 7300c87e..0a84f9b8 100644
--- a/modules/src/system/access.c
+++ b/modules/src/system/access.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/break.c b/modules/src/system/break.c
index 1160d326..90013c84 100644
--- a/modules/src/system/break.c
+++ b/modules/src/system/break.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/chmode.c b/modules/src/system/chmode.c
index ce14844e..d89c30e0 100644
--- a/modules/src/system/chmode.c
+++ b/modules/src/system/chmode.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 int
diff --git a/modules/src/system/close.c b/modules/src/system/close.c
index ffb9b7ea..350b72aa 100644
--- a/modules/src/system/close.c
+++ b/modules/src/system/close.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/create.c b/modules/src/system/create.c
index c33ddbfb..fd495503 100644
--- a/modules/src/system/create.c
+++ b/modules/src/system/create.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/exit.c b/modules/src/system/exit.c
index 011fd466..bcad6e8e 100644
--- a/modules/src/system/exit.c
+++ b/modules/src/system/exit.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 /* 	called by /lib/crt0.o; needed to suppress the loading of the
 	standard exit() which performs unnecessary cleanup actions
diff --git a/modules/src/system/filesize.c b/modules/src/system/filesize.c
index 588d66eb..ce7386c5 100644
--- a/modules/src/system/filesize.c
+++ b/modules/src/system/filesize.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <sys/types.h>
diff --git a/modules/src/system/lock.c b/modules/src/system/lock.c
index 608ad3c5..2b7f1eb1 100644
--- a/modules/src/system/lock.c
+++ b/modules/src/system/lock.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 int
diff --git a/modules/src/system/modtime.c b/modules/src/system/modtime.c
index ff81b00c..f4e43948 100644
--- a/modules/src/system/modtime.c
+++ b/modules/src/system/modtime.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <sys/types.h>
diff --git a/modules/src/system/open.c b/modules/src/system/open.c
index 65aefd0d..a1720e68 100644
--- a/modules/src/system/open.c
+++ b/modules/src/system/open.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/read.c b/modules/src/system/read.c
index 93e08e03..11802347 100644
--- a/modules/src/system/read.c
+++ b/modules/src/system/read.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/remove.c b/modules/src/system/remove.c
index 0b6452cb..6504db3a 100644
--- a/modules/src/system/remove.c
+++ b/modules/src/system/remove.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 int
diff --git a/modules/src/system/stop.c b/modules/src/system/stop.c
index 57ea3811..6785de63 100644
--- a/modules/src/system/stop.c
+++ b/modules/src/system/stop.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/system.c b/modules/src/system/system.c
index 68871dea..4529fea9 100644
--- a/modules/src/system/system.c
+++ b/modules/src/system/system.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* RCS: $Header$ */
 
 #include <system.h>
diff --git a/modules/src/system/system.h b/modules/src/system/system.h
index a43e1e2a..0631f44b 100644
--- a/modules/src/system/system.h
+++ b/modules/src/system/system.h
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* RCS: $Header$ */
 
 struct _sys_fildes {
diff --git a/modules/src/system/time.c b/modules/src/system/time.c
index ede8eee5..5fe9f9f0 100644
--- a/modules/src/system/time.c
+++ b/modules/src/system/time.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 long time();
diff --git a/modules/src/system/unlock.c b/modules/src/system/unlock.c
index 9d30a411..11af25a6 100644
--- a/modules/src/system/unlock.c
+++ b/modules/src/system/unlock.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 int
diff --git a/modules/src/system/write.c b/modules/src/system/write.c
index 97b7de71..582ecd3d 100644
--- a/modules/src/system/write.c
+++ b/modules/src/system/write.c
@@ -1,3 +1,7 @@
+/*
+ * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
+ * See the copyright notice in the ACK home directory, in the file "Copyright".
+ */
 /* $Header$ */
 
 #include <system.h>