Prolog/Graphics: XPCE

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XPCE is the so-called Prolog graphic library , although it isn't Prolog at all. Like they mention in it's manual, XPCE is not Prolog; XPCE is an object-oriented language that has absolutely nothing to do with Prolog.

The first thing that we need to do to create applications in XPCE is to install Swi-Prolog. You can find it at it's distributor page.

to be continued...