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copyright notices
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Copyright (c) 1983 The Regents of the University of California. All rights reserved.
Copyright (c) 1983, 1989 The Regents of the University of California. All rights reserved.
Copyright (c) 1984, 1993 The Regents of the University of California. All rights reserved.
Copyright (c) 1987, 1989 Regents of the University of California. All rights reserved.
Copyright (c) 1991, 1993 The Regents of the University of California. All rights reserved.
Copyright (c) 1996-1998 John-Mark Gurney. All rights reserved.
Copyright (c) 1998 The NetBSD Foundation, Inc. All rights reserved.