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diff --git a/EXTERN.h b/EXTERN.h
index 44d2fe4..dedd379 100644
--- a/EXTERN.h
+++ b/EXTERN.h
@@ -1,24 +1,27 @@
-/* $RCSfile: EXTERN.h,v $$Revision: 4.1 $$Date: 92/08/07 17:18:03 $
+/*    EXTERN.h
  *
- *    Copyright (c) 1991, Larry Wall
+ *    Copyright (c) 1991-1994, Larry Wall
  *
  *    You may distribute under the terms of either the GNU General Public
  *    License or the Artistic License, as specified in the README file.
  *
- * $Log:	EXTERN.h,v $
- * Revision 4.1  92/08/07  17:18:03  lwall
- * Stage 6 Snapshot
- * 
- * Revision 4.0.1.1  91/06/07  10:10:32  lwall
- * patch4: new copyright notice
- * 
- * Revision 4.0  91/03/20  00:58:26  lwall
- * 4.0 baseline.
- * 
  */
 
+/*
+ * EXT  designates a global var which is defined in perl.h
+ * dEXT designates a global var which is defined in another
+ *      file, so we can't count on finding it in perl.h
+ *      (this practice should be avoided).
+ */
 #undef EXT
-#define EXT extern
+#undef dEXT
+#if defined(VMS) && !defined(__GNUC__)
+#  define EXT globalref
+#  define dEXT globaldef {"$GLOBAL_RW_VARS"} noshare
+#else
+#  define EXT extern
+#  define dEXT
+#endif
 
 #undef INIT
 #define INIT(x)