I used a CAD program developed by J.R. de Weille for Amiga 1000. All data of my paintings  are stocked in my computer. After the introduction of the data of a given place, I can start designing possible constructions. This way 8 possibilities for Ocre d'Art, 16 possibilities for the Paraplufabriek and 16 possibilities for ESCA were produced.

Gérard Laplace wrote a short text about the meaning of the possibilities in my work.

While designing I can visualize the propositions and the space from any point of view I want. In the exposition at ESCA, visitors had the possibility to use the program and 'to walk' through the virtual space.

The computer is not only helping me in the designing of the constructions. By simply adding all the different constructions for one space, I realize a so-called 'rechaotisation' at the end of a project. For me it is important to conclude the phase of constructing  with an act, by which I return to an image more complex , to something more close to my chaos paintings.
Chaos means openness, means possible renewal.
I also create all kinds of unexpected, strange images while playing with the data. (look 'Devenir' ESCA and Ocre d'Art) They are interesting as a classical graphical image, but they are also the symbol of the unexpected possibilities of techniques. (see also the ufo and clouds in 'meeting place')
I like mixing, continuing processes, the not yet full-grown, the not finished. It makes me hopeful, because it means that flexibility still exists.

In 2015 PAMAL  (Preservation & Art – Media Archaeology Lab, École Supérieure d’Art d’Avignon ESAA) undertook an update of the software developed by Jan de Weille. They tried to make a new application, organised documentation from the past and made a website for what is since called DOEK.