Jacket —a protective and attractive cover for hardback books. It provides space for visual display and promotional copy. Also called a “dust cover” or “dust jacket.”

Jobber —a person or company who buys from a publisher, then resells to a bookstore or library. Sometimes referred to as a “wholesaler” or a “distributor.”

JPEG file— Joint Photographic Experts Group. File format commonly used to display graphics and images in HTML documents on the Internet.

Justify —the setting of type so that the end of each line is flush right and aligned perfectly.

Many thanks to the glossary's authors Tom and Marilyn Ross. Copyright 2006.

Marilyn and Tom Ross co-founded SPAN and are the authors of the classic bestseller, The Complete Guide to Self-Publishing, from which this article is adapted. Click here to learn more, or call 800-331-8355 And for additional information visit www.CommunicationCreativity.com/g