CP Shrink
From Just Solve the File Format Problem
CP Shrink (or CPSHRINK) is a compressed archive program for DOS, and its native .CPZ file format. It was developed by Central Point Software. It usually uses PKWARE DCL Implode compression.
Identification
There's no obvious way to identify a CPZ file from its contents. There is probably some sort of checksum field of that could be validated, but more research is needed.
Software
- Central Point More PC Tools 2.0 for DOS and Windows (German) → disk1.img → CPSHRINK.EXE (English)
- PC Tools Pro v9.0 (German) → disk1.img → CPSHRINK.EXE (German)
- CP Shrink, from the SAC collection (German)