An enumeration describing the type of an input device in general terms.
|The device is a mouse. (This will be reported for the core pointer, even if it is something else, such as a trackball.)
|The device is a stylus of a graphics tablet or similar device.
|The device is an eraser. Typically, this would be the other end of a stylus on a graphics tablet.
|The device is a graphics tablet "puck" or similar device.