English: On the left is a multi-path and a multi-volume. The endpoints of the multi-path and the inwards oriented surfaces of the multi-volume are shown (for the surface with a negative weight, the "inwards oriented surface" is actually oriented outwards). On the right is the multi-path that forms the intersection of the multi-path with the multi-volume, and the endpoints of the multi-path intersection are also shown. The multi-point that forms the endpoints of the intersection consists of two parts: the intersection of the endpoints of the original multi-path with the multi-volume, and the intersection of the original multi-path with the inwards oriented surfaces of the multi-volume.
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