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<H2><A NAME="sec:1.8"><SPAN class="sec-nr">1.8</SPAN> <SPAN class="sec-title">Acknowledgements</SPAN></A></H2>
<P>The development of <font size=-1>XPCE</font> 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
by Anjo Anjewierden and Jan Wielemaker.
<P>XPCE-4, offering support for X-windows and user-defined classes, has
been implemented by Jan Wielemaker. The implementation of user-defined
classes was initiated when Jan Wielemaker was guest at SERC (Software
Engineering Research Centre). Gert Florijn has contributed in the
initial discussions on user-defined classes. Frans Heeman has been the
first user.
<P>The interface to SICStus Prolog has been implemented in cooperation
with Stefan Andersson and Mats Carlsson from SICS.
<P>The interface to Quintus Prolog was initiated by Paul-Holmes Higgins.
The project was realised by James Little, Mike Vines and Simon Heywood
from AIIL.
<P>Luca Passani has bothered us with many questions, but was so kind to
organise this material and make it available to other <font size=-1>XPCE</font>
programmers in the form of a FAQ.
<P>Gertjan van Heijst has commented on <font size=-1>XPCE</font> as well
as earlier drafts of this documents.
<P>(X)PCE is used by many people. They have often been puzzled by bugs,
incompatibilities with older versions, etc. We would like to thank them
for their patience and remarks.
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