20. The sticker furnished by the director of classification on which the stamp for a film appears must be affixed in the following manner:(1) in the case of a 35 mm or 70 mm film, on the protective band at the beginning of the first reel of the film; the stamp number must be affixed to the film, beyond the leader;
(2) in the case of a 16 mm film, inside the cover of the film case; the stamp number must be affixed to the film, beyond the leader;
(3) in the case of a film on videocassette, on the videocassette or on the packaging if the videocassette is intended for retail sale;
(4) in the case of a film on videodisk, on the container of the videodisk; the stamp number must be affixed to the centre label of the videodisk.