Trillions of tiny femtomachines are distributed in the air, allowing anywhere to become a control panel with a simple swirl of a person's finger. A ship can use the system to sense what is happening throughout the interior, thus giving it more information to use for environmental control, security, and communication. Using the nodal system, a ship's computer may manifest herself anywhere on the ship in physical or holographic form. This system is also used to decorate the interior of some ships.