- A mock layout created to simulate the final product.
The complexity of the dummy can range from a simple mockup showing size and with a hand drawn sketch of the layout to one showing all the details exactly as the finished product will appear.
- A mockup of a book that is created to represent the physical appearance, including actual arrangement of the printed matter and illustrations, of a forthcoming book-to-book buyers.
Modern trade publishing has replaced the use of dummies with materials such as advance reading copies and uncorrected proofs.