The length of the cylinder is displayed between the points at which the component are connected in the model workspace. If you connect this shape to the frames of a single component,
a cylinder shape is displayed over the implicit geometry that represents the component in the 3-D workspace.
If you connect this component to the frames of two different modeling components,
the cylinder shape spans multiple components.
If the Partial Cylinder option is used, a third frame (frame_c) is used to define the orientation,
The parameter defines the covered angle (right-hand rule)