The Compress Data Base File command compresses a single member, generic
members, all members of a data base file or a save file into an output file.
CPRDBF is intended for the case where you are transmitting data to another
system. The amount of reduced space is very data dependent, but is generally
better than the SAV command DTACPR(*YES) function. The companion command is
DCPDBF to de-compress the data back to its original form.