What are the different kinds of series available in the ISFDB?
A Title series or Content series is a series with related stories, characters, or settings, such as the Harry Potter series, or the Star Trek books. It may consist of novels, short fiction, or both. There are also essay series, these are also considered content series. The ISFDB supports a complex hierarchy of subseries for title series. All publications of a work belong to the same title series, and no work can be in two different title series at the same time. A publication series is a set of similarly packaged books designated by the publisher (or publishers), often related only in theme or marketing. They may share an editor, or a presenter, or merely be grouped by the publisher. For example the Ballantine Adult Fantasy series or the Millennium / Gollancz SF Masterworks series are publication series. Different publications of the same work may well not be in the same publication series. The ISFDB does not support subseries for publication series. See Help: How to work with series f
