secondary — A secondary word or phrase in an index term
secondary ::=
abbrevaccelacronymaltanchorannotationapplicationauthorbibliorefcitationcitebiblioidciterefentrycitetitleclassnamecodecommandcomputeroutputconstantcorefdatabasedateeditoremailemphasis (db.emphasis)envarerrorcodeerrornameerrortexterrortypeexceptionnamefilenamefirsttermfootnotefootnoterefforeignphrasefunctionglosstermguibuttonguiiconguilabelguimenuguimenuitemguisubmenuhardwarehtml:buttonhtml:fieldsethtml:inputhtml:labelhtml:selecthtml:textareaindexterm (db.indexterm.endofrange)indexterm (db.indexterm.singular)indexterm (db.indexterm.startofrange)initializerinlineequationinlinemediaobjectinterfacenamekeycapkeycodekeycombokeysymlinkliteralmarkupmenuchoicemethodnamemodifiermousebuttonnonterminalolinkooclassooexceptionoointerfaceoptionoptionalorgnamepackageparameterpersonnamephrase (db.phrase)productnameproductnumberpromptpropertyquoteremarkreplaceablereturnvalueshortcutsubscriptsuperscriptsymbolsystemitemtagtermdeftokentrademarktypeuriuserinputvarnamewordaswordxrefSecondary contains a secondary word or phrase in an
IndexTerm.  The text of a Secondary term
is less significant than the Primary term, but more
significant than the Tertiary term for sorting and
display purposes.
In IndexTerms, you can only have one primary,
secondary, and tertiary term. If you want to index multiple
secondary terms for the same primary, you must repeat the
primary in another IndexTerm. You cannot place
several Secondarys in the same primary.
Suppressed. This element provides data for processing but is not rendered in the primary flow of text.
These elements contain secondary: indexterm (db.indexterm.singular), indexterm (db.indexterm.startofrange).
The following elements occur in secondary: 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, keycap, keycode, keycombo, keysym, link, literal, markup, menuchoice, methodname, modifier, mousebutton, nonterminal, olink, ooclass, ooexception, oointerface, option, optional, orgname, package, parameter, 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, primary, primaryie, secondaryie, see, seealso, seealsoie, seeie, tertiary, tertiaryie