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This library is built in the open.
If you spot an error, have a suggestion, or just want to say hello — we’d love to hear from you.

In the 16th century, a "Privilege" (Gratia) was a legal monopoly granted by a ruler or governing body, giving a printer the exclusive right to publish a specific book for a set number of years. The "Prohibition" warned others of the legal consequences of unauthorized copying.