/motion <entity> vector <x> <y> <z>
/motion <entity> magnitude (set|add|scale) <value>
/motion <entity> copyfrom <entity2>
/motion <entity> toward <x> <y> <z> (add|set) none <strength>
/motion <entity> toward <x> <y> <z> (add|set) <scaling> <nearStrength> <farStrength> <nearRadius> <farRadius>
/motion <entity> test vector <xRange> <yRange> <zRange>
/motion <entity> test direction <xRotRange> <yRotRange>
/motion test magnitude