These elements contain firstterm: abbrev, accel, acronym, address, application, arg, artpagenums, attribution, authorinitials, bibliocoverage, biblioentry, biblioid, bibliomisc, bibliomixed, bibliomset, bibliorelation, biblioset, bibliosource, bridgehead, caption (db.html.caption), citation, citebiblioid, citetitle, city, classname, classsynopsisinfo, code, command, computeroutput, confdates, confnum, confsponsor, conftitle, constant, contractnum, contractsponsor, contrib, country, database, description, edition, email, emphasis (db._emphasis), emphasis (db.emphasis), entry, envar, errorcode, errorname, errortext, errortype, exceptionname, fax, filename, firstname, firstterm (db._firstterm), firstterm (db.firstterm), foreignphrase (db._foreignphrase), foreignphrase (db.foreignphrase), funcdef, funcparams, funcsynopsisinfo, function, givenname, glosssee, glossseealso, glossterm (db._glossterm), glossterm (db.glossterm), guibutton, guiicon, guilabel, guimenu, guimenuitem, guisubmenu, hardware, holder, honorific, initializer, interfacename, issuenum, jobtitle, keycap, keycode, keysym, label, lineage, lineannotation, link, literal, literallayout, manvolnum, markup, mathphrase, member, methodname, modifier, mousebutton, msgaud, msglevel, msgorig, olink, option, optional, orgdiv, orgname, otheraddr, othername, package, pagenums, para, paramdef, parameter, personname, phone, phrase (db._phrase), phrase (db.phrase), pob, postcode, primary, primaryie, productname, productnumber, programlisting, prompt, property, publishername, quote (db._quote), quote (db.quote), refdescriptor, refentrytitle, refmiscinfo, refname, refpurpose, releaseinfo, remark, replaceable, returnvalue, revnumber, revremark, screen, secondary, secondaryie, see, seealso, seealsoie, seeie, seg, segtitle, seriesvolnums, shortaffil, simpara, state, street, subscript, subtitle, superscript, surname, symbol, synopsis, systemitem, tag, td, term, termdef, tertiary, tertiaryie, th, title, titleabbrev, tocentry, token, trademark, type, uri, userinput, varname, volumenum, wordasword, year.

The following elements occur in firstterm: text, abbrev, acronym, alt, anchor, annotation, biblioref, coref, date, emphasis (db._emphasis), firstterm (db._firstterm), footnote, footnoteref, foreignphrase (db._foreignphrase), glossterm (db._glossterm), indexterm (db.indexterm.endofrange), indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange), inlinemediaobject, link, olink, phrase (db._phrase), quote (db._quote), remark, replaceable, subscript, superscript, trademark, wordasword, xref.