Check this box to drag objects without pressing the mouse or TouchPad button.
To drag, tap twice on the object, down-up-down, leaving your finger on the TouchPad on the second tap. Move the selected object by sliding your finger across the TouchPad surface and lift your finger to drop the object.
If you have a supported pointing stick and it is selected, “Tap and Drag” will be changed to “Enable Dragging” and will control whether pressing on the pointing stick can be used to drag objects on the screen.