Content model for ERROR.
Content model for navigation. A inline-para child should have attribute class being one of ltx_page_navbar, ltx_page_header or ltx_page_footer and its contents will be used to create those components of webpages. Lacking those, a TOC requests a table of contents in the navigation bar. Page headers and footers will be synthesized from Links from the current page or document to related ones; these are represented by ref elements with rel being up, down, previous, next, and so forth. top-level elements, presumably block-level,