Preliminary User Guide: February 1988 First Update: June 1990 Second Update: Sept 1991 Third Update: August 1993 some new commands - see APPENDIX Minor Changes to docs and some bug fixes: January 1994 Version D 2.0 Minor Changes and some bug fixes - should now work under OSF/1: March-June 1994 Version D 2.1 Copyright (c) 1988,1991,1994 G. J. Barton.