A publication is a model element used to generate formatted output from a model (or some subset of a model) suitable for printing or online viewing. You can create publication elements either automatically or manually. A publication, in effect, describes a textual view of a set of model elements.
A publication element contains one or more topic elements, each of which can contain other topics. Each topic contains a text element derived from the textual contents of a model element. The text of a topic can contain hypertext links to the text of other topics.
For more information about publishing, see Publishing models.