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Photography — 120-size and 220-size films — Dimensions
_ dimensions of 120-size and 220-size films and of the spools common to both,
_ dimensions of the backing paper for 120-size film and the leader and trailer paper for 220-size film, as well as
the placement of the paster tape used for attaching these papers to the films,
_ minimum length of film required in front of the leading edge of the first image and behind the trailing edge of
the last image, and
_ markings on the backing paper and the trailer-paper for identification of the intended photofinishing process.
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