Property lists named after the model number of the device they should apply to, divided in 2 or 3 sections:
capabilities for device names and available hardware & features;
iconState for the default application sorting (Settings>General>Reset>Reset Home Screen Layout) while the rest are sorted alphabetically, making it possible to make some applications "sticky";
??? for importing another model definition file as a template; this applies recursively.
The model definition file seems to be missing in iOS 7, so any iDevices with iOS 7 as an initial firmware don't have this.
||iPad 2 (iPad2,1)
||iPad 2 (iPad2,2)
||iPad 2 (iPad2,3)
||iPad 2 (iPad2,4)
||iPad (3rd generation) (iPad3,1)
||iPad (3rd generation) (iPad3,2)
||iPad (3rd generation) (iPad3,3)
||iPad (4th generation) (iPad3,4)
||iPad (4th generation) (iPad3,5)
||iPad (4th generation) (iPad3,6)
Root/System/Library/CoreServices/SpringBoard.app (Before iOS 7)