%MACENVY-SLOTS returns the number of slots in the machine
%MACENVY-SOUND returns details on Sound Hardware
%MACENVY-SYSTEM returns System version
%MACENVY-TEXTEDIT returns TextEdit version
%MACENVY-GESTALT returns Gestalt version
Also note that %MACENVY requires is quite large, so if it returns ?MACENVY? instead of the information you're after, increase Fingerd's (or Finger's) partition.