May be formatted inline or as a displayed block, depending on context. Sometimes suppressed.

Common attributes and common linking attributes.

any attribute

Any attribute in any other explicit namespace

These elements contain issuenum: biblioentry, bibliomixed, bibliomset, biblioset, info (db.info), info (db.titleforbidden.info), info (db.titleonly.info), info (db.titleonlyreq.info), info (db.titlereq.info).

The following elements occur in issuenum: text, abbrev, acronym, alt, anchor, 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, subscript, superscript, trademark, wordasword, xref.