PRG:
This extension can be one of the following:
- Atari ST Program (Atari)
- Commodore PET/VIC20/64/128 Executable Programs in BASIC
- GEM Executable Program
- OzWin CompuServe E-mail/Forum Access Purged Message File
- Program File
- RPG Toolkit Program Script (Christopher Matthews)
- SHARP MZ-series Emulator File
- SpecEm Snapshot
- WAVmaker Program
