Three-dimensional representation using a ray-tracing method of the cluster shown in Fig. 7. Relative to Fig. 7, the cluster was turned 20° counter-clockwise in order to position the coils in a vertical position. Complex movements around the cluster are presented to reveal the three-dimensional arrangement of the coils.

The movie presents the same cluster as in Movie 1. It begins with a rotation around the vertical axis. When the coils are clearly seen, a sectioning plane is added on the right of coil number 2. The rotation continues, then the front part of the volume is cut off in order to show the objects on the sectioning plane. This plane is further moved toward the observer in order to section the coil parallel to its axis. When the plane is positioned within the coil, several twines appear (compare with Fig. 8A,B). Then, the upper part of the volume reappears and the rotation continues.

The same cluster as on Movies 1 and 2 is shown. The view is from the lower to the upper part of the cluster. A sectioning plane is added orthogonal to the axis of the coils. After a 180° rotation, the upper part of the volume is cut off and the sectioning plane is displaced toward the observer. In several images, the internal organization of the coils appears - several bent twines can be seen (compare with Fig. 8C,D). On the last plane, a circular twine is seen. The upper part of the volume reappears and is rotated in order to better visualize the three-dimensional organization of the twine: its diameter is similar to that of the coil. Finally, the magnification is increased.

The same cluster as on Movies 1 to 3 is shown. The volume is rotated in order to put the coils in a horizontal position. The lower half of the volume was cut off to simplify the detailed observation. The volume is rotated: several twines clearly appear within the coils. During the rotation in the plane of the section, the parallel disposition of several twines is revealed. The last angle of view is seen in the stereo-pair on Fig. 8E.