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If you have an evaluation version of Reader Extensions,
you can select the Draft draft level when you save as a PDF. Although
a watermark does not appear on documents modified using an evaluation
version of the product, the documents do have a limited validity
period and will lose their usage rights at the end of the evaluation
period. When an end user opens a PDF document that contains expired
usage rights in Adobe Reader 7.0 or later, an alert message is displayed, informing
that the validity has expired.
When you add usage rights to a PDF document by using an evaluation
version of Reader Extensions, you should include text in the message
that informs users when the usage rights in the PDF document will
expire.
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