Description Segment of a book component that is isolated from the narrative flow of the main text, typically boxed and floating. Sidebar may have a Title and a TitleAbbrev, followed by paragraphs, lists, and other block-oriented elements. No Sects allowed.
Sidebar has common attributes.
In some contexts, additional elements may be allowed by inclusions in parent elements. Similarly, in some contexts, some of these elements may be invalid due to exclusions in parent elements.