| Copyright (c) 1991, 1993 | |
| The Regents of the University of California. All rights reserved. | |
| (c) UNIX System Laboratories, Inc. | |
| All or some portions of this file are derived from material licensed | |
| to the University of California by American Telephone and Telegraph | |
| Co. or Unix System Laboratories, Inc. and are reproduced herein with | |
| the permission of UNIX System Laboratories, Inc. | |
| This code is derived from software contributed to Berkeley by | |
| Hugh Smith at The University of Guelph. |