This website is dedicated to my close and faithful friend Uli Pahlke (1957–2018). He was a very special person, gifted musician and outstanding PHP programmer. Since 1999 Uli supervised this webpage as system administrator with advice and support and I admire his selfless commitment in this context. I would like to thank him for everything I have learned up to now about CMS systems and websites. So Uli has my undying gratitude for his precious friendship! R.I.P.