| 摘要 |
The information-bearer, is made of foldable paper or cardboard which has more than four side surfaces (1) the adjacent ones of which are separated by fold lines. When folded out, the side surfaces forms an enclosed geometrical body such as a polyhedron. Some of the side surfaces, at least one of which has a picture or writing on, adjoin connecting surfaces (2) by means of fold lines. The connecting surfaces when unfolded are inside the geometrical body; are joined by elastic pieces such as rubber bands; and each contain an opening (3)
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