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This file is part of Logtalk <http://logtalk.org/>  

Logtalk is free software. You can redistribute it and/or modify it under
the terms of the FSF GNU General Public License 3  (plus some additional
terms per section 7).        Consult the `LICENSE.txt` file for details.
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To load this example and for sample queries, please see the `SCRIPT.txt` file.

This example illustrates the use of assignable variables and parametric 
objects as alternative implementation to dynamic object predicates for
storing (backtrackable) object state. For more information on assignable 
variables please consult the URL:

	http://www.kprolog.com/en/logical_assignment/

The objects in this example make use of the library category `assignvars`.
This category contains an adaptation of the pure logical subset implementation
of assignable variables by Nobukuni Kino, which can be found on the URL above.
