General Rigid Body ================== A general rigid body has its center of gravity (CG) located at a user-specified point and orientation defined in a specified frame, a fixed mass, and specified inertia tensor. **Keyword Arguments** :param str name: Key to be used when referencing this body. :param str ref_point_key: Key of the point at which this body's CG is located. :param str ref_frame_key: ey of the frame to which this body orientation is defined. :param numeric mass: Mass of this body. :param numeric ixx: Moment of inertia (MOI) of this body defined relative to its CG about the reference frame's X-axis. :param numeric iyy: MOI of this body defined relative to its CG about the reference frame's Y-axis. :param numeric izz: MOI of this body defined relative to its CG about the reference frame's Z-axis. :param str ixy: Product of inertia (POI) of this body defined relative to its CG in the reference frame's X- and Y-axes. :param str iyz: POI of this body defined relative to its CG in the reference frame's Y- and Z-axes. :param str izx: POI of this body defined relative to its CG in the reference frame's Z- and X-axes. :return str: Message about the created body