am I really blind, or is there no way to do something like

'BormParticipant' removePrefix: 'Borm' "-> 'Participant'"

or

'BormParticipant' copyFrom: 5 "-> 'Participant'" "OrderedCollection knows this"

I can do copyFrom:to:, but that requires asking the size of the string, which is (in my eyes) ugly.

So is there better (=single message) way?

Thanks,

Peter