In addition to the requirements of this license, it is requested from and
strongly recommended of redistributors that:
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If you are distributing Open Publication works on hardcopy or CD-ROM,
you provide email notification to the authors of your intent to
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All substantive modifications (including deletions) be either clearly
marked up in the document or else described in an attachment to the
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Finally, while it is not mandatory under this license, it is considered
good form to offer a free copy of any hardcopy and CD-ROM expression of
an Open Publication-licensed work to its author(s).