citation structure declares a structure and method for citing the current document. delimiter supplies a delimiting string preceding the structural component.

delim must contain at least one character.

match supplies an XPath selection pattern using the syntax defined in which identifies a set of nodes which are citable structural components. The expression may be absolute (beginning with /) or relative. match on a citeStructure without a citeStructure parent must be an absolute XPath. If it is relative, its context is set by the match of the parent citeStructure. An XPath in @match on the outer must start with '/'. An XPath in @match must not start with '/' except on the outer . unit describes the structural unit indicated by the citeStructure.