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Logtalk - Object oriented extension to Prolog
Release 2.17.2
Copyright (c) 1998-2004 Paulo Moura. All Rights Reserved.
To load all entities in this group load the dependents_loader.lgt
utility file:
| ?- logtalk_load(dependents_loader).
The categories "observer" and "subject" implement the Smalltalk
dependent handling mechanism.