ref-type

Type of Cross-Reference

Type of element that is the target of the cross-reference (for example, “figure”, “author-note”, “bibliographic-reference”). The values may be used for type-specific processing or validation.

Remarks

The <xref> element may be used to reference anything that has an @id attribute. This single element takes the place of the many named types of references (such as figure references, table references, and footnote references) that are common in many journal tag sets. This attribute preserves the information from such tag sets concerning the type of element to which the cross-reference is pointing.

Attribute Values

In Element

<xref>
ValueMeaning
affAffiliation.
appAppendix.
author-notesAuthor notes.
bibrBibliographic reference (typically to a <ref> element, but it may point to a <element-citation> or <mixed-citation> if there are multiple citations inside the <ref> element).
boxed-textTextbox or sidebar.
chemChemical structure (to a <chem-struct> or <chem-struct-wrap> element).
contribContributor.
correspCorresponding author.
disp-formulaDisplay formula.
figFigure or group of figures (to a <fig> or <fig-group> element).
fnFootnote.
kwdKeyword.
listList or list item (to a <list> or <list-item> element; also, possibly to a <def-list> or <def-item> element).
otherNone of the items listed.
platePlate.
schemeScheme.
secSection.
statementStatement.
supplementary-materialSupplementary information.
tableTable or group of tables (to a <table-wrap> or <table-wrap-group> element).
table-fnTable footnote.
Restriction: This is an optional attribute; there is no default.