"The Chicago Manual of Style" is published in hardcover and online. The online edition includes the searchable text of both the 16th and 17th—its most recent—editions with features such as tools for editors, a citation guide summary, and searchable access to a Q&A, where University of Chicago Press editors answer readers' style questions. "The Chicago Manual of Style" also discusses the parts of a book and the editing process. An annual subscription is required for access to the online content of the "Manual". (Access to the Q&A, however, is free, as are various editing tools.)