Restricts a physical object's movement. 0 means completely locked and 1 means free-to-move. E.g. passing 1,0,1 to the Position input will lock an object in the X/Z plane, and passing 0,0,1 to the Rotation input will only allow it to rotate around the Z axis.

Using numbers such as 0.5,0.5,0.5 will make the object react to physics 50% less than normal. Negative numbers reverse physics and numbers bigger than 1 increase them.