for graphical input devices Buxton’s 3 State Model for graphical input devices

Mouse States Button Up State 1 State 2 Button Down Tracking Dragging

Mouse States State 1 State 2 Tracking Button Down Dragging Button Up Click

Mouse States State 1 State 2 Tracking Button Down Dragging Button Up

Mouse States Raise Mouse State 1 State 2 Tracking Button Down Dragging Button Up State 0 Mouse Area Lower Mouse Out of Range

Timing State 1 2 Time State 1 2 Time

Graphics Tablet States Stylus Lift State 1 State 2 Tracking Tip Switch Close Dragging Tip Switch Open State 0 Stylus On Out of Range