Stewart platforms are known by various other names. In many applications, including in flight simulators, it is commonly referred to as a motion base. It is sometimes called a "six-axis platform" or "6-DoF platform" because of its possible motions and, because the motions are produced by a combination of movements of multiple actuators, it may be referred to as a "synergistic motion platform", due to the synergy (mutual interaction) between the way that the actuators are programmed. Because the device has six actuators, it is often called a "hexapod" (six legs) in common usage, a name which was originally trademarked by Geodetic Technology for Stewart platforms used in machine tools.