SoMotion3Event(3) on Linux
The text 49706a9d4d7b, as Debian 7 (Wheezy) shipped it.
The SoMotion3Event class contains information about 3D movement events. Motion3 events are generated by devices capable of '3D motion', for instance spaceballs. Instances of this class contains information about these devices' translations and rotations in all 3 dimensions.