================================================================= Logtalk - Object oriented extension to Prolog Release 2.27.1 Copyright (c) 1998-2006 Paulo Moura. All Rights Reserved. ================================================================= This directory contains two versions, one prototype-based and the other one class-based, of a very simple geometric shapes hierarchy. ph prototype-based version ch class-based version Both versions define the following hierarchy of objects: shape polygon regular_polygon square q1 q2