This application uses the Gestalt trap ($A1AD) available in System 6.0.4 and later to show various info about your Macintosh. See IM VI, chapter 3 for more info.
Different selectors are shown with different versions of the system (I've tried 6.0.4, 6.0.5, and 7.0a9). Hold down the option key while you launch Gestalt! to get a complete list of selectors.
You may add selectors. Use ResEdit to modify the "GST#" resource. A template is provided.
6.0.4 or later is required to use Gestalt!
Unpack with StuffIt and BinHex.
Public Domain by Roland Mînsson, SiC! Development HB, Lund, Sweden