| 摘要 |
A system is described including the steps of receiving a set of a digital-medium from an organization; dividing the set into a free portion and a paid portion; distributing to a person, associated with the organization, the set; allowing performing of the free portion; collecting a payment from the person; allowing performing, after the step of collecting a payment, of the paid portion; and paying, to the organization, a portion of the payment.
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