Appl 2.7.9, freeware Gestalt. Appl is a tool that allows you to check all gestalt selectors posted by Mac OS or by any other piece of software. It is also a database including information about your system environment. As Rene G. A. Ros said in his Gestalt Selectors List, Gestalt. Version 2.7.9 was compiled on 15 July 1998 and its database was updated the same day.
Documentation is enclosed.