Index: main_act.c
===================================================================
--- main_act.c	(revision 14052)
+++ main_act.c	(revision 14053)
@@ -198,7 +198,8 @@
 {
 	printf("\n"
 				 "                COPYRIGHT for the original pcb program:\n\n"
-				 "    PCB, interactive printed circuit board design\n"
+ *  pcb-rnd, interactive printed circuit board design
+ *  (this file is based on PCB, interactive printed circuit board design)
 				 "    Copyright (C) 1994,1995,1996,1997 Thomas Nau\n"
 				 "    Copyright (C) 1998, 1999, 2000 Harry Eaton\n\n");
 	printf("                COPYRIGHT for %s (pcb-rnd) version %s:\n"