Defines a placement in 3D space
 
                    Position - Define a 3D position in space
Position Orientation - A simple 3axis position/orientation into space to place any 3D element
Position Orientation Size - Define a Position,Orientation and Size in space
Target Orientation Distance - Default placement of a Camera A camera filming 3D content Read More
Position Target Roll - Got a position and a Target which determine the orientation of the object and the a barrel roll parameter
Rail - Allow to use the placement of your geometry to do rail animations
Position Quaternion - Uses quaternion algorithm for the rotation transformation of the object
Matrix - Non user friendly 3D transformations mainly used to import 
                 3D File
                External referenced 3D file (.fbx and .obj)
                Read More
3D File
                External referenced 3D file (.fbx and .obj)
                Read More
                
Relative To Camera - As it say, take as reference your camera
Mirror - Mirroir mirroir, qui est la plus belle ?
Link To Tracker - Placement relative to tracker