Thanks for all the tips, especially Jacob B. 'Schoolhouse Rock' [[http://www.yak.net/pub/ian/SHR/Intro.html]] is exactly what I had been looking for. Again I want to say, it's just amazing how Mudcat is working. I found it about a month ago and I must admit it has become my favourite internet site (I am not only following recent discussions but also reading 'old' threads). It's unbelievable what (background) information one can get here. Congratulations to the founders of this site and all those who contribute with their knowledge. May it stay like this
Thanks
Ulli