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This file is Copyright (©) 1999 by Jan Newmarch (http://pandonia.canberra.edu.au) jan@ise.canberra.edu.au.
This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v0.4 or later (the latest version is presently available at http://www.opencontent.org/openpub/). Distribution of the work or derivative of the work in any standard (paper) book form is prohibited unless prior permission is obtained from the copyright holder.