bookcomponent.content

  ((CalloutList | GlossList | ItemizedList | OrderedList
  | SegmentedList | SimpleList | VariableList | Caution
  | Important | Note | Tip | Warning | LiteralLayout
  | ProgramListing | ProgramListingCO | Screen | ScreenCO
  | ScreenShot | Synopsis | CmdSynopsis | FuncSynopsis
  | FormalPara | Para | SimPara | Address | BlockQuote
  | Graphic | GraphicCO | InformalEquation
  | InformalExample | InformalTable | Equation | Example
  | Figure | Table | MsgSet | Procedure | Sidebar | Anchor
  | BridgeHead | Comment | Highlights | Abstract
  | AuthorBlurb | Epigraph)+, (Sect1* | (RefEntry)*
  | SimpleSect*))
  | (Sect1+ | (RefEntry)+ | SimpleSect+)