Use your touch screen to rotate and zoom the 3D model. Tapping the upper tabs jump to original home position of front, back, upper, lower, right, and left. Lower tabs and bar are for changing transparency of the head structures, including bilateral brains, skin, cranial nerves, cerebellar peduncle, vessels, and skull. You can find the neuroanatomical terms on tapping info button, located right upper corner. And back to 3D model after tapping the lower center button.