Priscilla:
If it was spelled with 2 Ps then it was an error. It should be dropt.
Even though, it is only a week since I fully realized this strange spelling. I have to check since my memory doesn't work as it should anymore

My guess is that I will have to reread chapters 60ff. Is there a suffix for following chapters in English? In German 60f (f = folgendes) means 60 and 61, while 60ff (ff = folgende)means 60 and any number of following chapters.