JetCP is a fastest-possible speed file copy program for Z3PLUS only. 
As such, it does not include many of the amenities found in more 
sophisticated (but slower) copy programs, such as multiple file 
capability, copy verification, or user-query options, but these 
capabilities are easily implemented by Z System.  JetCP preserves 
file datestamps, if available.  Source code available privately by 
request.  Wanna drag?                     3/24/90 by Carson Wilson