Date   : Sun, 15 Mar 1987 01:10:49 est
From   : marwood@dmc-crc.ARPA (G. J. Marwood)
Subject: Crunched files

Ralph Hyre asks about the significance of .?z? files.
These files are crunched files, which use a data compression algorithm which 
generally produces smaller compressed files than the "squeezed" .?Q? files.    
The means to "crunch" and "uncrunch" may be found in PD:<CPM.SQUSQ>
CRUNCH23.LBR.1 on SIMTEL20.   Crunched files should not be confused with 
.AZM files which are used as source files by several Z80 assemblers, e.g.
Z80MR.  Non-crunched .?Z? files crunch into .ZZZ files.

Gordon Marwood