Date   : Fri, 24 Oct 1986 14:01:10 GMT
From   : Da-Hai Li <dhl%doc.ic.ac.uk@BRL.ARPA>
Subject: z-system

Hi, 
   Can anybody out there tell me what is that so good about
the Z-system?  How is it different from the CCP?
     Thanks in advance,
       Da-Hai