Describes a coordinate system.
    typedef struct {
        API_Vector3D       	    xVector;
        API_Vector3D       	    yVector;
    } API_CoordinateSystem;
    
Members
- xVector  
- x direction of the coordinate system
- yVector  
- y direction of the coordinate system
Requirements
- Version: API 24 or later
- Header: .\APIdefs_Elements.h