These elements contain subtitle: acknowledgements, appendix, article, bibliodiv, biblioentry, bibliography, bibliomixed, bibliomset, biblioset, book, chapter, colophon, dedication, glossary, glossdiv, index, indexdiv, info (db.info), info (db.titlereq.info), part, partintro, preface, reference, refsect1, refsect2, refsect3, refsection, refsynopsisdiv, screenshot, sect1, sect2, sect3, sect4, sect5, section, set, setindex, simplesect, task, tocdiv.

The following elements occur in subtitle: text, abbrev, accel, acronym, alt, anchor, annotation, application, author, biblioref, citation, citebiblioid, citerefentry, citetitle, classname, code, command, computeroutput, constant, coref, database, date, editor, email, emphasis (db.emphasis), envar, errorcode, errorname, errortext, errortype, exceptionname, filename, firstterm, footnote, footnoteref, foreignphrase, function, glossterm, guibutton, guiicon, guilabel, guimenu, guimenuitem, guisubmenu, hardware, indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), initializer, inlineequation, inlinemediaobject, interfacename, jobtitle, keycap, keycode, keycombo, keysym, link, literal, markup, menuchoice, methodname, modifier, mousebutton, nonterminal, olink, ooclass, ooexception, oointerface, option, optional, org, orgname, package, parameter, person, personname, phrase (db.phrase), productname, productnumber, prompt, property, quote, remark, replaceable, returnvalue, shortcut, subscript, superscript, symbol, systemitem, tag, termdef, token, trademark, type, uri, userinput, varname, wordasword, xref.