Towards the back, behind the furthest two nocks you’ll find the TactileView Digital Pen Dock. It is about two centimetres in height, eight centimetres wide and has rounded corners. On the back of the dock is a small indentation. This is where you can place the receiver for the TactileView Digital Pen. Simply place the receiver’s magnets inside the indentation and the magnets will click in place. Make sure the wire of the receiver does not obstruct the arm during movement.is not in the way of the arm.