diff --git a/lang/pc/libpc/abi.c b/lang/pc/libpc/abi.c
index 3844c79f..abfe4e9b 100644
--- a/lang/pc/libpc/abi.c
+++ b/lang/pc/libpc/abi.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/abl.c b/lang/pc/libpc/abl.c
index fb625c0b..9ffbfbe9 100644
--- a/lang/pc/libpc/abl.c
+++ b/lang/pc/libpc/abl.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/abr.c b/lang/pc/libpc/abr.c
index 9ee7d418..9a8c0bdf 100644
--- a/lang/pc/libpc/abr.c
+++ b/lang/pc/libpc/abr.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/arg.c b/lang/pc/libpc/arg.c
index 4c43e2a0..91d01579 100644
--- a/lang/pc/libpc/arg.c
+++ b/lang/pc/libpc/arg.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/ass.c b/lang/pc/libpc/ass.c
index 747587ec..8522d942 100644
--- a/lang/pc/libpc/ass.c
+++ b/lang/pc/libpc/ass.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/asz.c b/lang/pc/libpc/asz.c
index b47e6990..271b882d 100644
--- a/lang/pc/libpc/asz.c
+++ b/lang/pc/libpc/asz.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/atn.c b/lang/pc/libpc/atn.c
index edfa4555..c329ced3 100644
--- a/lang/pc/libpc/atn.c
+++ b/lang/pc/libpc/atn.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/bcp.c b/lang/pc/libpc/bcp.c
index 12783d5f..219c0b15 100644
--- a/lang/pc/libpc/bcp.c
+++ b/lang/pc/libpc/bcp.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/bts.e b/lang/pc/libpc/bts.e
index 8dd36b35..74ed0d4e 100644
--- a/lang/pc/libpc/bts.e
+++ b/lang/pc/libpc/bts.e
@@ -1,4 +1,5 @@
 #
+; $Header$
 ;
 ; (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
 ;
diff --git a/lang/pc/libpc/buff.c b/lang/pc/libpc/buff.c
index 9d64327e..80f54a6e 100644
--- a/lang/pc/libpc/buff.c
+++ b/lang/pc/libpc/buff.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/catch.c b/lang/pc/libpc/catch.c
index f6abc3a9..18ae87b4 100644
--- a/lang/pc/libpc/catch.c
+++ b/lang/pc/libpc/catch.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/clock.c b/lang/pc/libpc/clock.c
index 7dc84000..af32fa04 100644
--- a/lang/pc/libpc/clock.c
+++ b/lang/pc/libpc/clock.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/cls.c b/lang/pc/libpc/cls.c
index e815e829..2234e198 100644
--- a/lang/pc/libpc/cls.c
+++ b/lang/pc/libpc/cls.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/cvt.c b/lang/pc/libpc/cvt.c
index 0d73ef7d..c1a3bd6c 100644
--- a/lang/pc/libpc/cvt.c
+++ b/lang/pc/libpc/cvt.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 extern double	_fif();
 
 /*
diff --git a/lang/pc/libpc/diag.c b/lang/pc/libpc/diag.c
index 3b43cfc9..ea16c0b7 100644
--- a/lang/pc/libpc/diag.c
+++ b/lang/pc/libpc/diag.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/dis.c b/lang/pc/libpc/dis.c
index 64320f0b..7d8c738e 100644
--- a/lang/pc/libpc/dis.c
+++ b/lang/pc/libpc/dis.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/efl.c b/lang/pc/libpc/efl.c
index 7b8581b9..888de603 100644
--- a/lang/pc/libpc/efl.c
+++ b/lang/pc/libpc/efl.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/eln.c b/lang/pc/libpc/eln.c
index 74e6cf24..08be0a54 100644
--- a/lang/pc/libpc/eln.c
+++ b/lang/pc/libpc/eln.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/encaps.e b/lang/pc/libpc/encaps.e
index 1715e4aa..371c2d4e 100644
--- a/lang/pc/libpc/encaps.e
+++ b/lang/pc/libpc/encaps.e
@@ -1,6 +1,7 @@
 #
 
 
+; $Header$
 ;  (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
 ; 
 ;           This product is part of the Amsterdam Compiler Kit.
diff --git a/lang/pc/libpc/exp.c b/lang/pc/libpc/exp.c
index 3726de14..ac604a5c 100644
--- a/lang/pc/libpc/exp.c
+++ b/lang/pc/libpc/exp.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/fef.e b/lang/pc/libpc/fef.e
index 3bceb28e..8620a9df 100644
--- a/lang/pc/libpc/fef.e
+++ b/lang/pc/libpc/fef.e
@@ -1,4 +1,5 @@
 #
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 #define FARG    0
diff --git a/lang/pc/libpc/fif.e b/lang/pc/libpc/fif.e
index 40d54d1d..b8c3d350 100644
--- a/lang/pc/libpc/fif.e
+++ b/lang/pc/libpc/fif.e
@@ -1,4 +1,5 @@
 #
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 #define ARG1    0
diff --git a/lang/pc/libpc/get.c b/lang/pc/libpc/get.c
index 7cee957d..b25f3226 100644
--- a/lang/pc/libpc/get.c
+++ b/lang/pc/libpc/get.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 #include	<pc_err.h>
 
diff --git a/lang/pc/libpc/gto.e b/lang/pc/libpc/gto.e
index 76e32a2a..9ef40d80 100644
--- a/lang/pc/libpc/gto.e
+++ b/lang/pc/libpc/gto.e
@@ -1,4 +1,5 @@
 #
+; $Header$
 ;  (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
 ; 
 ;           This product is part of the Amsterdam Compiler Kit.
diff --git a/lang/pc/libpc/hlt.c b/lang/pc/libpc/hlt.c
index c1d27a45..3cf73072 100644
--- a/lang/pc/libpc/hlt.c
+++ b/lang/pc/libpc/hlt.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/hol0.e b/lang/pc/libpc/hol0.e
index db2ff4ff..2d5a9a72 100644
--- a/lang/pc/libpc/hol0.e
+++ b/lang/pc/libpc/hol0.e
@@ -1,5 +1,6 @@
 #
 
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 ; _hol0 return the address of the ABS block (hol0)
diff --git a/lang/pc/libpc/incpt.c b/lang/pc/libpc/incpt.c
index e05ccf93..9ba7495b 100644
--- a/lang/pc/libpc/incpt.c
+++ b/lang/pc/libpc/incpt.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/ini.c b/lang/pc/libpc/ini.c
index c7e5e8e1..bf995862 100644
--- a/lang/pc/libpc/ini.c
+++ b/lang/pc/libpc/ini.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/log.c b/lang/pc/libpc/log.c
index 662fcd0e..8ce22c3c 100644
--- a/lang/pc/libpc/log.c
+++ b/lang/pc/libpc/log.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/mdi.c b/lang/pc/libpc/mdi.c
index f41b7d62..7f087d27 100644
--- a/lang/pc/libpc/mdi.c
+++ b/lang/pc/libpc/mdi.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/mdl.c b/lang/pc/libpc/mdl.c
index 4c5465d4..8c8272f4 100644
--- a/lang/pc/libpc/mdl.c
+++ b/lang/pc/libpc/mdl.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/new.c b/lang/pc/libpc/new.c
index 80868f48..10f1685b 100644
--- a/lang/pc/libpc/new.c
+++ b/lang/pc/libpc/new.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/nobuff.c b/lang/pc/libpc/nobuff.c
index 3274a14e..10f80cb4 100644
--- a/lang/pc/libpc/nobuff.c
+++ b/lang/pc/libpc/nobuff.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/notext.c b/lang/pc/libpc/notext.c
index 1256087c..4f0cb459 100644
--- a/lang/pc/libpc/notext.c
+++ b/lang/pc/libpc/notext.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 notext(f) struct file *f; {
diff --git a/lang/pc/libpc/opn.c b/lang/pc/libpc/opn.c
index 882a2dc8..54966296 100644
--- a/lang/pc/libpc/opn.c
+++ b/lang/pc/libpc/opn.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/outcpt.c b/lang/pc/libpc/outcpt.c
index 2cc03f52..8717317b 100644
--- a/lang/pc/libpc/outcpt.c
+++ b/lang/pc/libpc/outcpt.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/pac.c b/lang/pc/libpc/pac.c
index e3cb43b3..8cea845b 100644
--- a/lang/pc/libpc/pac.c
+++ b/lang/pc/libpc/pac.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/pclose.c b/lang/pc/libpc/pclose.c
index 6d0bdd11..53914623 100644
--- a/lang/pc/libpc/pclose.c
+++ b/lang/pc/libpc/pclose.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_cls();
diff --git a/lang/pc/libpc/pcreat.c b/lang/pc/libpc/pcreat.c
index ea844901..d389ca87 100644
--- a/lang/pc/libpc/pcreat.c
+++ b/lang/pc/libpc/pcreat.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/pentry.c b/lang/pc/libpc/pentry.c
index e979e64e..59190fbb 100644
--- a/lang/pc/libpc/pentry.c
+++ b/lang/pc/libpc/pentry.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/perrno.c b/lang/pc/libpc/perrno.c
index 4ed3b715..fe9b52f7 100644
--- a/lang/pc/libpc/perrno.c
+++ b/lang/pc/libpc/perrno.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /* function perrno:integer; extern; */
 
 extern int	errno;
diff --git a/lang/pc/libpc/pexit.c b/lang/pc/libpc/pexit.c
index 17070441..1051c923 100644
--- a/lang/pc/libpc/pexit.c
+++ b/lang/pc/libpc/pexit.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern int	*_extfl;
diff --git a/lang/pc/libpc/popen.c b/lang/pc/libpc/popen.c
index ae245eae..6533fcaa 100644
--- a/lang/pc/libpc/popen.c
+++ b/lang/pc/libpc/popen.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/put.c b/lang/pc/libpc/put.c
index 21254f3e..bb959426 100644
--- a/lang/pc/libpc/put.c
+++ b/lang/pc/libpc/put.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_wf();
diff --git a/lang/pc/libpc/rdc.c b/lang/pc/libpc/rdc.c
index 70b2f2d2..c95e2e02 100644
--- a/lang/pc/libpc/rdc.c
+++ b/lang/pc/libpc/rdc.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_rf();
diff --git a/lang/pc/libpc/rdi.c b/lang/pc/libpc/rdi.c
index d32e7f5f..f6b40846 100644
--- a/lang/pc/libpc/rdi.c
+++ b/lang/pc/libpc/rdi.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/rdl.c b/lang/pc/libpc/rdl.c
index a687d58b..6a3670ce 100644
--- a/lang/pc/libpc/rdl.c
+++ b/lang/pc/libpc/rdl.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/rdr.c b/lang/pc/libpc/rdr.c
index 7d7a6b00..475c4c79 100644
--- a/lang/pc/libpc/rdr.c
+++ b/lang/pc/libpc/rdr.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/rf.c b/lang/pc/libpc/rf.c
index 42e81aa6..87e1a4ee 100644
--- a/lang/pc/libpc/rf.c
+++ b/lang/pc/libpc/rf.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 #include	<pc_err.h>
 
diff --git a/lang/pc/libpc/rln.c b/lang/pc/libpc/rln.c
index 66e56fc9..19fcff37 100644
--- a/lang/pc/libpc/rln.c
+++ b/lang/pc/libpc/rln.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_rf();
diff --git a/lang/pc/libpc/rnd.c b/lang/pc/libpc/rnd.c
index 848ff18d..b2c651bd 100644
--- a/lang/pc/libpc/rnd.c
+++ b/lang/pc/libpc/rnd.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 double _rnd(r) double r; {
 	return(r + (r<0 ? -0.5 : 0.5));
 }
diff --git a/lang/pc/libpc/sav.e b/lang/pc/libpc/sav.e
index 47b9524a..4937ddee 100644
--- a/lang/pc/libpc/sav.e
+++ b/lang/pc/libpc/sav.e
@@ -1,4 +1,5 @@
 #
+; $Header$
 ;  (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
 ; 
 ;           This product is part of the Amsterdam Compiler Kit.
diff --git a/lang/pc/libpc/sig.e b/lang/pc/libpc/sig.e
index 5ba95134..3c8d2634 100644
--- a/lang/pc/libpc/sig.e
+++ b/lang/pc/libpc/sig.e
@@ -1,5 +1,6 @@
 #define PROC    0
 
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 ; _sig is called with one parameter:
diff --git a/lang/pc/libpc/sin.c b/lang/pc/libpc/sin.c
index 782ec901..b24e991a 100644
--- a/lang/pc/libpc/sin.c
+++ b/lang/pc/libpc/sin.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/sqt.c b/lang/pc/libpc/sqt.c
index 097d60f2..a3f91e4f 100644
--- a/lang/pc/libpc/sqt.c
+++ b/lang/pc/libpc/sqt.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/string.c b/lang/pc/libpc/string.c
index 7cb16a25..0c395711 100644
--- a/lang/pc/libpc/string.c
+++ b/lang/pc/libpc/string.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /* function strbuf(var b:charbuf):string; */
 
 char *strbuf(s) char *s; {
diff --git a/lang/pc/libpc/trap.e b/lang/pc/libpc/trap.e
index b94aba92..65895d9a 100644
--- a/lang/pc/libpc/trap.e
+++ b/lang/pc/libpc/trap.e
@@ -1,5 +1,6 @@
 #
 
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 #define	TRAP	0
diff --git a/lang/pc/libpc/trp.e b/lang/pc/libpc/trp.e
index bc9986ae..130344a3 100644
--- a/lang/pc/libpc/trp.e
+++ b/lang/pc/libpc/trp.e
@@ -1,5 +1,6 @@
 #
 
+; $Header$
  mes 2,EM_WSIZE,EM_PSIZE
 
 #define TRAP    0
diff --git a/lang/pc/libpc/unp.c b/lang/pc/libpc/unp.c
index d292cae5..d6673023 100644
--- a/lang/pc/libpc/unp.c
+++ b/lang/pc/libpc/unp.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/uread.c b/lang/pc/libpc/uread.c
index e63aab02..97cd768a 100644
--- a/lang/pc/libpc/uread.c
+++ b/lang/pc/libpc/uread.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /* function uread(fd:integer; var b:buf; n:integer):integer; */
 
 extern int	read();
diff --git a/lang/pc/libpc/uwrite.c b/lang/pc/libpc/uwrite.c
index 9cc83857..0758ccf3 100644
--- a/lang/pc/libpc/uwrite.c
+++ b/lang/pc/libpc/uwrite.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /* function uwrite(fd:integer; var b:buf; n:integer):integer; */
 
 extern int	write();
diff --git a/lang/pc/libpc/wdw.c b/lang/pc/libpc/wdw.c
index d8c1931f..b915aa1f 100644
--- a/lang/pc/libpc/wdw.c
+++ b/lang/pc/libpc/wdw.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern struct file	*_curfil;
diff --git a/lang/pc/libpc/wf.c b/lang/pc/libpc/wf.c
index 1836f87d..1cac6ce3 100644
--- a/lang/pc/libpc/wf.c
+++ b/lang/pc/libpc/wf.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 #include	<pc_err.h>
 
diff --git a/lang/pc/libpc/wrc.c b/lang/pc/libpc/wrc.c
index e90d61e9..4409df90 100644
--- a/lang/pc/libpc/wrc.c
+++ b/lang/pc/libpc/wrc.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_wf();
diff --git a/lang/pc/libpc/wrf.c b/lang/pc/libpc/wrf.c
index f2c680bf..37531fa4 100644
--- a/lang/pc/libpc/wrf.c
+++ b/lang/pc/libpc/wrf.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/wri.c b/lang/pc/libpc/wri.c
index b2dfe5d8..321c2149 100644
--- a/lang/pc/libpc/wri.c
+++ b/lang/pc/libpc/wri.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_wstrin();
diff --git a/lang/pc/libpc/wrl.c b/lang/pc/libpc/wrl.c
index 6f8aa12f..e3b8a2ed 100644
--- a/lang/pc/libpc/wrl.c
+++ b/lang/pc/libpc/wrl.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/wrr.c b/lang/pc/libpc/wrr.c
index c64fee28..704f8f7c 100644
--- a/lang/pc/libpc/wrr.c
+++ b/lang/pc/libpc/wrr.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/wrs.c b/lang/pc/libpc/wrs.c
index 2770fc87..b59e0739 100644
--- a/lang/pc/libpc/wrs.c
+++ b/lang/pc/libpc/wrs.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 /*
  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
  *
diff --git a/lang/pc/libpc/wrz.c b/lang/pc/libpc/wrz.c
index 03f8cbfc..cbda92e8 100644
--- a/lang/pc/libpc/wrz.c
+++ b/lang/pc/libpc/wrz.c
@@ -1,3 +1,4 @@
+/* $Header$ */
 #include	<pc_file.h>
 
 extern		_wss();