GEM resource file
From Just Solve the File Format Problem
GEM resource file (RSC) is a file format used by some Atari software to store menus, dialog boxes, text strings, icons, etc.
It is also sometimes used as an icon library format.
- Deark can extract some graphics from RSC files.
- Atari Icon Library
- If you look at a few dozen Atari programs at random, you'll probably find some RSC files.
- GEM Program and Resource Files, from Atari Computing magazine