Recent security and other patches made by my web host have broken my TWiki site. This is both a problem and an opportunity. The problem is what to do about this (fix the problem? rewrite the site? delete the site?). The opportunity is to abandon explicity a site that I abandoned in practice years ago, or to do something new with it.
In any case, there is unlikely to be anything here for some time to come. I apologize to the two or three people who have visited this site previously and who, for reasons best known to themselves alone, would want to come back.