InstallShield installer archive
InstallShield installer archive is what we're calling the format of the
_inst32i.ex_ file included in many Windows software distributions that use the InstallShield installation software. Another filename used by the format is
_inst16.ex_. Rarely, filenames
_inst32a.ex_ (related to Windows NT for DEC Alpha) and
_inst32m.ex_ (MIPS) may be found.
It uses PKWARE DCL Implode compression.
Based on unconfirmed information, the 16-bit
setup.exe program detects the user's platform, and extracts the appropriate platform-specific installer programs from (e.g.)
Files begin with bytes
2a ab 79 d8.
At offset 8 is the message "
Copyright (c) 1990-1995 Stirling Technologies, Inc. All Rights Reserve".
- Examples of software with such a file: , , 
- FILExt page about the ??_ file extension pattern (Look for "InstallShield")