Aldus PKZP

File Format
Name	Aldus PKZP
Ontology	Electronic File Formats Compression Aldus PKZP
Extension(s)	.??~, others
Released	≤1991

Some Aldus software distributions, particularly PageMaker, used an installer-archive format that might be known as Aldus PKZP, or Aldus Zip. It is similar to Aldus LZW.

An archive contains a single member file, or maybe a fragment of a file.

The compression scheme is based on PKWARE DCL Implode, though segmented.

Identification

The first 16 bytes of a file are ASCII "ALDUS PKZP  2.00".

Sample files

• Pegasus 5.0 → CD1 → PEGASUS/W_DEMOS/PM5DEMO*.ZIP