Sadly, Renate Baird has passed away last week, at 78.
Renate had been maintaining this website for the last years. Traffic has been almost zero for some time and it will shut down definitely before the end of 2021. No new posts or comments can be added from now on.
If someone is interested in taking over the website, please email email@example.com before shutdown. The site is the last repository of an enormous amount of work by Albert and Renate and hopefully someone will take it over.