# Contents
This directory contains XPCE, an object-oriented symbolic programming
environment for User Interfaces. XPCE was designed to be
language-independant. In practice it has gained popularity with Prolog
and many useful libraries are now available for Prolog only. Therefore
we will often talk about XPCE/Prolog.
# Authors
The development of XPCE was started by Anjo Anjewierden. The package was
then called PCE. He designed and implemented version 1 and 2. Version 3
is the result of a joint effort from Anjo Anjewierden and Jan
Wielemaker. This was the last version based on SunView. Version 4 and 5
have been designed and implemented by Jan Wielemaker. It makes the full
object oriented mechanisms underlying PCE available to the Prolog
programmer and has bindings for X-windows (X11) and MS-Windows (Win32).
# Copyrights
The copyright to XPCE is owned by the University of Amsterdam. XPCE is
distributed under the "Simplified BSD License"
# Installation
See the file INSTALL.md for building xpce. Further information on
building XPCE is also available from the SWI-Prolog and XPCE web pages.