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Subscribe-to-open (S2O)

S2O allows publishers to convert journals from subscriptions to OA, one year at a time. Using S2O, a publisher offers a journal’s current subscribers continued access. If all current subscribers participate in the S2O offer (simply by not opting out) the publisher opens the content covered by that year’s subscription. If participation is not sufficient—for example, if some subscribers delay renewing in the expectation that they can gain access without participating—then that year’s content remains gated.