primary — The primary word or phrase under which an index term should be sorted
abbrevacronymcorefdateemphasis (db.emphasis)firsttermfootnotefootnoterefforeignphraseglosstermphrase (db.phrase)quotesubscriptsuperscriptwordasword
altanchorannotationbibliorefindexterm (db.indexterm.endofrange)indexterm (db.indexterm.singular)indexterm (db.indexterm.startofrange)inlinemediaobjectlinkolinkremarksubscriptsuperscriptxrefIn an indexterm, primary identifies the most significant word or words in the entry. All indexterms must have a primary.
Suppressed. This element provides data for processing but it is not rendered in the primary flow of text.
Common attributes and common linking attributes.
Specifies the string by which the term is to be sorted; if unspecified, the term content is used
These elements contain primary: indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange).
The following elements occur in primary: 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, html:button, html:fieldset, html:input, html:label, html:select, html:textarea, 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.
indexentry, indexterm, primaryie, secondary, secondaryie, see, seealso, seealsoie, seeie, tertiary, tertiaryie