FIXME: TBD.

These elements contain poetry: acknowledgements, answer, appendix, article, bibliodiv, bibliography, bibliolist, blockquote, callout, calloutlist, caption, chapter, colophon, cover, dedication, dialogue, drama, entry, example, figure, footnote, glossary, glossdef, glossdiv, glosslist, index, informalexample, informalfigure, itemizedlist, legalnotice, linegroup, listitem, note, orderedlist, partintro, poetry, preface, procedure, qandadiv, qandaset, question, revdescription, section, setindex, sidebar, simplesect, step, taskprerequisites, taskrelated, tasksummary, textobject, toc, variablelist.

The following elements occur in poetry: address, anchor, bibliolist, blockquote, bridgehead, calloutlist, dialogue, drama, epigraph, equation, example, figure, formalpara, glosslist, indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), info (db.titleforbidden.info), info (db.titleonly.info), informalequation, informalexample, informalfigure, informaltable, itemizedlist, line, linegroup, literallayout, mediaobject, note, orderedlist, para, poetry, procedure, qandaset, remark, revhistory, sidebar, simpara, simplelist, table, task, title, titleabbrev, variablelist.