Available in elements (192):

abstract, alt, apiname, area, audience, author, b, body, boolean, brand, category, chdesc, chdeschd, chhead, choice, choices, choicetable, choption, choptionhd, chrow, cite, cmd, cmdname, codeblock, codeph, colspec, component, conbody, concept, context, coords, copyrholder, copyright, copyryear, created, critdates, data, data-about, dd, ddhd, delim, desc, dl, dlentry, dlhead, draft-comment, dt, dthd, entry, example, featnum, fig, figgroup, filepath, fn, foreign, fragment, fragref, glossdef, glossentry, glossterm, groupchoice, groupcomp, groupseq, i, image, imagemap, index-base, index-see, index-see-also, index-sort-as, indexterm, indextermref, info, itemgroup, keyword, keywords, kwd, li, lines, link, linkinfo, linklist, linkpool, linktext, lq, menucascade, metadata, msgblock, msgnum, msgph, navtitle, no-topic-nesting, note, object, ol, oper, option, othermeta, p, param, parml, parmname, pd, permissions, ph, platform, plentry, postreq, pre, prereq, prodinfo, prodname, prognum, prolog, propdesc, propdeschd, properties, property, prophead, proptype, proptypehd, propvalue, propvaluehd, pt, publisher, q, refbody, reference, refsyn, related-links, repsep, required-cleanup, resourceid, result, revised, row, screen, searchtitle, section, sep, series, shape, shortcut, shortdesc, simpletable, sl, sli, source, state, stentry, step, stepresult, steps, steps-unordered, stepxmp, sthead, strow, sub, substep, substeps, sup, synblk, synnote, synnoteref, synph, syntaxdiagram, systemoutput, table, task, taskbody, tbody, term, tgroup, thead, title, titlealts, tm, topic, tt, tutorialinfo, u, uicontrol, ul, unknown, userinput, var, varname, vrm, vrmlist, wintitle, xref

In definitions of anonymous complexTypes of elements (192):

abstract [ref], alt [ref], apiname [ref], area [ref], audience [ref], author [ref], b [ref], body [ref], boolean [ref], brand [ref], category [ref], chdesc [ref], chdeschd [ref], chhead [ref], choice [ref], choices [ref], choicetable [ref], choption [ref], choptionhd [ref], chrow [ref], cite [ref], cmd [ref], cmdname [ref], codeblock [ref], codeph [ref], colspec [ref], component [ref], conbody [ref], concept [ref], context [ref], coords [ref], copyrholder [ref], copyright [ref], copyryear [ref], created [ref], critdates [ref], data [ref], data-about [ref], dd [ref], ddhd [ref], delim [ref], desc [ref], dl [ref], dlentry [ref], dlhead [ref], draft-comment [ref], dt [ref], dthd [ref], entry [ref], example [ref], featnum [ref], fig [ref], figgroup [ref], filepath [ref], fn [ref], foreign [ref], fragment [ref], fragref [ref], glossdef [ref], glossentry [ref], glossterm [ref], groupchoice [ref], groupcomp [ref], groupseq [ref], i [ref], image [ref], imagemap [ref], index-base [ref], index-see [ref], index-see-also [ref], index-sort-as [ref], indexterm [ref], indextermref [ref], info [ref], itemgroup [ref], keyword [ref], keywords [ref], kwd [ref], li [ref], lines [ref], link [ref], linkinfo [ref], linklist [ref], linkpool [ref], linktext [ref], lq [ref], menucascade [ref], metadata [ref], msgblock [ref], msgnum [ref], msgph [ref], navtitle [ref], no-topic-nesting [ref], note [ref], object [ref], ol [ref], oper [ref], option [ref], othermeta [ref], p [ref], param [ref], parml [ref], parmname [ref], pd [ref], permissions [ref], ph [ref], platform [ref], plentry [ref], postreq [ref], pre [ref], prereq [ref], prodinfo [ref], prodname [ref], prognum [ref], prolog [ref], propdesc [ref], propdeschd [ref], properties [ref], property [ref], prophead [ref], proptype [ref], proptypehd [ref], propvalue [ref], propvaluehd [ref], pt [ref], publisher [ref], q [ref], refbody [ref], reference [ref], refsyn [ref], related-links [ref], repsep [ref], required-cleanup [ref], resourceid [ref], result [ref], revised [ref], row [ref], screen [ref], searchtitle [ref], section [ref], sep [ref], series [ref], shape [ref], shortcut [ref], shortdesc [ref], simpletable [ref], sl [ref], sli [ref], source [ref], state [ref], stentry [ref], step [ref], stepresult [ref], steps [ref], steps-unordered [ref], stepxmp [ref], sthead [ref], strow [ref], sub [ref], substep [ref], substeps [ref], sup [ref], synblk [ref], synnote [ref], synnoteref [ref], synph [ref], syntaxdiagram [ref], systemoutput [ref], table [ref], task [ref], taskbody [ref], tbody [ref], term [ref], tgroup [ref], thead [ref], title [ref], titlealts [ref], tm [ref], topic [ref], tt [ref], tutorialinfo [ref], u [ref], uicontrol [ref], ul [ref], unknown [ref], userinput [ref], var [ref], varname [ref], vrm [ref], vrmlist [ref], wintitle [ref], xref [ref]