Sipke de Wal, author of xgistor.ath.cx, died on 13 May 2004. I recently found many links pointing to his now non-existant site and thought it a pity that all his work was lost. This is an incomplete echo of that site.
Missing or very incomplete sections are marked x, let me know if you'd like to see them recovered.
If you have any of the files missing from this site, or any helpful comments about this site - contact me