These parameter entities offer a place where you can easily add new attributes to DocBook elements.
Each of the local attribute parameter entities is defined as empty by default in DocBook.
| %local.abbrev.attrib; | %local.abstract.attrib; | %local.accel.attrib; | 
| %local.ackno.attrib; | %local.acronym.attrib; | %local.action.attrib; | 
| %local.address.attrib; | %local.admon.attrib; | %local.affiliation.attrib; | 
| %local.alt.attrib; | %local.anchor.attrib; | %local.appendix.attrib; | 
| %local.application.attrib; | %local.area.attrib; | %local.areaset.attrib; | 
| %local.areaspec.attrib; | %local.arg.attrib; | %local.artheader.attrib; | 
| %local.article.attrib; | %local.artpagenums.attrib; | %local.attribution.attrib; | 
| %local.author.attrib; | %local.authorblurb.attrib; | %local.authorgroup.attrib; | 
| %local.authorinitials.attrib; | %local.beginpage.attrib; | %local.bibliodiv.attrib; | 
| %local.biblioentry.attrib; | %local.bibliography.attrib; | %local.bibliomisc.attrib; | 
| %local.bibliomixed.attrib; | %local.bibliomset.attrib; | %local.biblioset.attrib; | 
| %local.blockquote.attrib; | %local.book.attrib; | %local.bookbiblio.attrib; | 
| %local.bookinfo.attrib; | %local.bridgehead.attrib; | %local.callout.attrib; | 
| %local.calloutlist.attrib; | %local.chapter.attrib; | %local.citation.attrib; | 
| %local.citerefentry.attrib; | %local.citetitle.attrib; | %local.city.attrib; | 
| %local.classname.attrib; | %local.cmdsynopsis.attrib; | %local.co.attrib; | 
| %local.collab.attrib; | %local.collabname.attrib; | %local.command.attrib; | 
| %local.comment.attrib; | %local.common.attrib; | %local.computeroutput.attrib; | 
| %local.confdates.attrib; | %local.confgroup.attrib; | %local.confnum.attrib; | 
| %local.confsponsor.attrib; | %local.conftitle.attrib; | %local.contractnum.attrib; | 
| %local.contractsponsor.attrib; | %local.contrib.attrib; | %local.copyright.attrib; | 
| %local.corpauthor.attrib; | %local.corpname.attrib; | %local.country.attrib; | 
| %local.database.attrib; | %local.date.attrib; | %local.dedication.attrib; | 
| %local.edition.attrib; | %local.editor.attrib; | %local.effectivity.attrib; | 
| %local.email.attrib; | %local.emphasis.attrib; | %local.envar.attrib; | 
| %local.epigraph.attrib; | %local.equation.attrib; | %local.errorcode.attrib; | 
| %local.errorname.attrib; | %local.errortype.attrib; | %local.example.attrib; | 
| %local.fax.attrib; | %local.figure.attrib; | %local.filename.attrib; | 
| %local.firstname.attrib; | %local.firstterm.attrib; | %local.footnote.attrib; | 
| %local.footnoteref.attrib; | %local.foreignphrase.attrib; | %local.formalpara.attrib; | 
| %local.funcdef.attrib; | %local.funcparams.attrib; | %local.funcprototype.attrib; | 
| %local.funcsynopsis.attrib; | %local.funcsynopsisinfo.attrib; | %local.function.attrib; | 
| %local.glossary.attrib; | %local.glossdef.attrib; | %local.glossdiv.attrib; | 
| %local.glossentry.attrib; | %local.glosslist.attrib; | %local.glosssee.attrib; | 
| %local.glossseealso.attrib; | %local.glossterm.attrib; | %local.graphic.attrib; | 
| %local.graphicco.attrib; | %local.graphics.attrib; | %local.group.attrib; | 
| %local.guibutton.attrib; | %local.guiicon.attrib; | %local.guilabel.attrib; | 
| %local.guimenu.attrib; | %local.guimenuitem.attrib; | %local.guisubmenu.attrib; | 
| %local.hardware.attrib; | %local.highlights.attrib; | %local.holder.attrib; | 
| %local.honorific.attrib; | %local.indexdiv.attrib; | %local.indexentry.attrib; | 
| %local.indexes.attrib; | %local.indexterm.attrib; | %local.informalequation.attrib; | 
| %local.informalexample.attrib; | %local.informaltable.attrib; | %local.inlineequation.attrib; | 
| %local.inlinegraphic.attrib; | %local.interface.attrib; | %local.interfacedefinition.attrib; | 
| %local.invpartnumber.attrib; | %local.isbn.attrib; | %local.issn.attrib; | 
| %local.issuenum.attrib; | %local.itemizedlist.attrib; | %local.itermset.attrib; | 
| %local.jobtitle.attrib; | %local.keyaction.attrib; | %local.keycap.attrib; | 
| %local.keycode.attrib; | %local.keycombo.attrib; | %local.keysym.attrib; | 
| %local.keyword.attrib; | %local.keywordset.attrib; | %local.legalnotice.attrib; | 
| %local.lineage.attrib; | %local.lineannotation.attrib; | %local.link.attrib; | 
| %local.listitem.attrib; | %local.literal.attrib; | %local.literallayout.attrib; | 
| %local.lot.attrib; | %local.lotentry.attrib; | %local.manvolnum.attrib; | 
| %local.mark.attrib; | %local.markup.attrib; | %local.medialabel.attrib; | 
| %local.member.attrib; | %local.menuchoice.attrib; | %local.modespec.attrib; | 
| %local.mousebutton.attrib; | %local.msg.attrib; | %local.msgaud.attrib; | 
| %local.msgentry.attrib; | %local.msgexplan.attrib; | %local.msginfo.attrib; | 
| %local.msglevel.attrib; | %local.msgmain.attrib; | %local.msgorig.attrib; | 
| %local.msgrel.attrib; | %local.msgset.attrib; | %local.msgsub.attrib; | 
| %local.msgtext.attrib; | %local.olink.attrib; | %local.option.attrib; | 
| %local.optional.attrib; | %local.orderedlist.attrib; | %local.orgdiv.attrib; | 
| %local.orgname.attrib; | %local.otheraddr.attrib; | %local.othercredit.attrib; | 
| %local.otherinfo.attrib; | %local.othername.attrib; | %local.pagenums.attrib; | 
| %local.para.attrib; | %local.paramdef.attrib; | %local.parameter.attrib; | 
| %local.part.attrib; | %local.partintro.attrib; | %local.phone.attrib; | 
| %local.phrase.attrib; | %local.pob.attrib; | %local.postcode.attrib; | 
| %local.preface.attrib; | %local.primsecter.attrib; | %local.primsecterie.attrib; | 
| %local.printhistory.attrib; | %local.procedure.attrib; | %local.productname.attrib; | 
| %local.productnumber.attrib; | %local.programlisting.attrib; | %local.programlistingco.attrib; | 
| %local.prompt.attrib; | %local.property.attrib; | %local.pubdate.attrib; | 
| %local.publisher.attrib; | %local.publishername.attrib; | %local.pubsnumber.attrib; | 
| %local.quote.attrib; | %local.refclass.attrib; | %local.refdescriptor.attrib; | 
| %local.refentry.attrib; | %local.refentrytitle.attrib; | %local.reference.attrib; | 
| %local.refmeta.attrib; | %local.refmiscinfo.attrib; | %local.refname.attrib; | 
| %local.refnamediv.attrib; | %local.refpurpose.attrib; | %local.refsect1.attrib; | 
| %local.refsect2.attrib; | %local.refsect3.attrib; | %local.refsynopsisdiv.attrib; | 
| %local.releaseinfo.attrib; | %local.replaceable.attrib; | %local.returnvalue.attrib; | 
| %local.revhistory.attrib; | %local.revision.attrib; | %local.revnumber.attrib; | 
| %local.revremark.attrib; | %local.sbr.attrib; | %local.screen.attrib; | 
| %local.screenco.attrib; | %local.screeninfo.attrib; | %local.screenshot.attrib; | 
| %local.sect1.attrib; | %local.sect2.attrib; | %local.sect3.attrib; | 
| %local.sect4.attrib; | %local.sect5.attrib; | %local.seealsoie.attrib; | 
| %local.seeie.attrib; | %local.seeseealso.attrib; | %local.seg.attrib; | 
| %local.seglistitem.attrib; | %local.segmentedlist.attrib; | %local.segtitle.attrib; | 
| %local.seriesinfo.attrib; | %local.seriesvolnums.attrib; | %local.set.attrib; | 
| %local.setinfo.attrib; | %local.sgmltag.attrib; | %local.shortaffil.attrib; | 
| %local.shortcut.attrib; | %local.sidebar.attrib; | %local.simpara.attrib; | 
| %local.simplelist.attrib; | %local.simplesect.attrib; | %local.ssscript.attrib; | 
| %local.state.attrib; | %local.status.attrib; | %local.step.attrib; | 
| %local.street.attrib; | %local.structfield.attrib; | %local.structname.attrib; | 
| %local.subject.attrib; | %local.subjectset.attrib; | %local.subjectterm.attrib; | 
| %local.substeps.attrib; | %local.subtitle.attrib; | %local.surname.attrib; | 
| %local.symbol.attrib; | %local.synopfragment.attrib; | %local.synopfragmentref.attrib; | 
| %local.synopsis.attrib; | %local.systemitem.attrib; | %local.term.attrib; | 
| %local.title.attrib; | %local.titleabbrev.attrib; | %local.toc.attrib; | 
| %local.tocback.attrib; | %local.tocchap.attrib; | %local.tocentry.attrib; | 
| %local.tocfront.attrib; | %local.toclevel1.attrib; | %local.toclevel2.attrib; | 
| %local.toclevel3.attrib; | %local.toclevel4.attrib; | %local.toclevel5.attrib; | 
| %local.tocpart.attrib; | %local.token.attrib; | %local.trademark.attrib; | 
| %local.type.attrib; | %local.ulink.attrib; | %local.userinput.attrib; | 
| %local.varargs.attrib; | %local.variablelist.attrib; | %local.varlistentry.attrib; | 
| %local.void.attrib; | %local.volumenum.attrib; | %local.wordasword.attrib; | 
| %local.xref.attrib; | %local.year.attrib; | 
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